You have a very interesting account. It seems like you're trying to do a couple things, but haven't committed to one strategy enough to be really effective.
First, I would recommend getting boots with movement speed. Even though I'm sure you'll have to downgrade in stats. You could look for boots that are like 10% MS or 11% which will be cheaper than those at 12% which is the max. I would also recommend finding some boots with VIT on them as well as just a crazy high dex, but I'll hit on that topic next.
Second, your HP is only 24.4, and you have no sustain other than gloom and the 143 shoulder/helm regen. This means you are going to die a lot! You may be able to live through A1, but I'd imagine A2 would kill you enough to make farming quite ineffective. This is where the boot suggestion comes in as you could really boost your survive, and I don't think you need the resist on it. A3 can be a little tough with less than 300 resist, but you'll have to upgrade your gear a lot before you're really effective there. At 24k you'd get one shotted by most everything so lowering the rest to increase HP will increase your survive even there.
Third, to increase your DPS on a budget, I'd look to swap out your amulet. You have 24.5% Crit chance so you're not getting the most from that amulet. Instead, I would rather have one with attack speed. The reason is that without the 65% crit damage, the extra crit chance isn't a huge deal, and I don't think you can afford multiple stats right now from what you described. If you can get one with 8 IAS, dex/vit, and 20+ crit damage awesome!
Fourth, would you consider getting rid of Sharp Shooter? Sharp shooter increases your DPS on paper, but isn't going to have that great of impact. You're already hitting a crit once every four shots (give the 24.5% crit chance), so the boost isn't that much for you. Instead, you may look at tactical advantage that will make it easier to kite since you'll have more monsters getting to you until you can get your DPS higher.