You will hit at least:
And die to practically everything at any higher than MP3. This is not the type of gearing that I advise, and is a good segway into what I intended to post next.
I've lost count of the amount of people that have come to me for help, almost always with almost the same problem. They're trying to farm x in MP8+ and are having trouble staying alive. Then we go through their gear and find that getting the survivability stats that they need would require an overhaul. They can't fit the damage affixes in their rings that they need, because they rely on them for AR/vit. They often have to do this because their chests always lack the vitality that they need, often same with their pants, which are all too often low vit or no vit Inna's. Ditto to the ice climbers. Their weapon and passive options are often restricted because they use witching hour belts. Others hesitate to make the switch to a crit mempo because they rely on their helm for vitality.
I'm not going to explicitly say "don't use x piece of gear", but these are some general guidelines of what you should be looking for.
First of all, 24% MS is a must as far as I'm concerned. Your character will feel like a slug without it. Whatever frustration you might have from your paper stats going down from accommodating this won't match the frustration that you'd have from dropping from 24% to 12%. Its inefficient and not fun to play. This is why I suggest IK strides in my opening post.
Second, I strongly urge two slots of lifesteal on your gear. Typically one of your weapons and your belt. This will make your life much easier. It might be tempting to drop to one or less, but its not worth the headaches that you'll encounter as a result. Yes, there are exceptions at the higher-end, but if you're a beginner, stick to two on gear, and don't rely on bloodthirst as a passive is my recommendation. IAS Skorn is an exception to this. An LS Skorn should usually have 5% on it as a minimum.
Third, do not rely on both of your rings for attack speed breakpoints. One of them generally should have attack speed as an affix. The other should be able to be cleanly switched to a stone of jordan for essence farming and ubers. (And for the utility of cold or HotA reduction)
For the gear-
Look for 200 vitality on your chest as a minimum. This isn't an end-all and be-all. There are ways to make lower or even none (like in the case of tyrael's) work, but in most cases, you will run into trouble with less than 200 unless you really know what you're doing. If you can't afford IK's with 200, that's ok, just go for blackthornes, or even rares if you can find them.
Inna's pants- First of all, make sure you really have a need for these. Can you fit the attack speed and movement speed that you need elsewhere without sacrificing too much? If you're sure the answer is no, make sure you're getting one with at least 150 vitality. Once again, there are exceptions, but you will generally run into problems otherwise. Nine times out of ten, you will want to pair these up with ice climbers with around 300 sum total of strength and vit. If you can't afford this, you're likely going down the wrong route. In almost all cases, you will want either an IK belt or crafted bracers to go along with this combo to make up for the lost stats.
Ice climbers- As above, either around 300 sum total of strength+vit, or 200-250 with 10%+ movement speed. If you're going below this level of stats, IK strides start becoming more attractive.
Witching hour- This is a piece you have to be very careful with. The sheet DPS boost it gives is too tempting for most to pass up. I'm going to say that 99% of the time, it is not the right way to go. Its truly a belt for the 1%. It usually forces you to go for pricey IK iron gloves rather than rares, which often by itself makes it not worthwhile. The lack of lifesteal forces you to weaken your weapons, and/or use the bloodthirst passive which weakens your overall effectiveness. The only cases where I really feel like this belt makes sense is a) if you're using an LS skorn, or b) if you have a high-end S&B setup, or c) if your character sheet reads in the territory of 400k-500k with passives only. (ie, your gear is worth over 10b) If you answered no to any of these, re-evaluate where you could end up with an IK belt, stronger rare gloves, and a better weapon without lifesteal. If you're absolutely certain that this belt makes sense for you, I suggest to not get one with less than 90 vitality or 50 AR.
Andariel's visage - I can't come up with any situation where this helm actually makes sense. Proceed with caution with this one and be sure you really know what you're doing. If you're absolutely certain that you can't give up either the crit chance by going with a non-crit mempo, nor any attack speed by going with an IK helm, nor have the budget for an crit mempo, then you have a gearset where it might fit, and also one of a kind that I've never seen before. At first glance, it looks like an excellent utility and DPS piece. The real issue is the amount of survivability you give up with it, not even counting the fire damage. If you go with a socket, you're still giving up both a slot of AR and the equivalent of over 100 vitality. Price out how much adding those two stats would cost on your gear, and you'll see why its so cheap. The people using it usually like playing on the edge and have sufficiently high end gear elsewhere that they don't feel the hit too badly.