Havent read anyone elses post so apologies if i go over old ground.

Its good that you now have a workable bankroll. Thats a great start point. However, if you feel you have tilt and emotional issues then i think you need to sit down and play small games that over a sample you will be able to beat and get used to the grind of cash games.
I suggest 25nl. You may be over rolled but you have issues about perhaps going busto if you get tilted bad, so take a safe amrgin. It'll also give lots of time to get used to how all this works without it having a significant impact on your br.