sick boy, I think you might have the wrong approach to cash games from what you are saying.
You're talking about playing yourself back up within a session, but you can just rebuy. Don't play below 50bb, unless you're going to nutcamp, which is not a great idea either. Being down one or two buy ins shouldn't matter. I consistently take a couple of buy-in downswings. It starts to suck at about 4 without catching much of a break.
Watch the videos on this site - there's a great insight on how to play various stakes.