Lucie, without gold, life is tough :/
You have a lot of odd-ball gear, imo. You should start with crafting, since you sound diablo-poor. CC/All Res/Armor/Vit bracers should be a goal--you will be fine if vit or armor dont roll on them. You should then craft gloves with CC/CD. You can try for Attack Speed and/or All Res, and if you get Vit, too, yay! Ideally for CoB, you will be good with CC/CD/AR/Vit. Your shoulders are tough to beat with crafts, but you can roll higher Int/Vit + Life %/AR/Armor on them--very rare. You might be able to roll a better crafted ammy than your Tal's, which would allow you to sell the Tal's and allocate funds elsewhere…or you can stick with Tal's.
The life regen stat on your ring could be rerolled to Avg Dmg, AS, Vit, Int…lots of options to better you. Same goes for the cold on your boots…could be int, vit, AR.
Your weapon has very low DPS for a 2-hander. Look for one with 100%+ to CD, and a high Int Roll. A decent (1200dps) life steal Skorn shouldnt be that expensive; try upgrading there.
Lastly, with your Armor and All Res at current, you do not need 77k HP. Drop some RS Amethysts and pick up some Topaz. You are losing out on 348 Int, which will directly affect your overall damage.