What sort of sample size do you have at given limits? And what sort of winrate? I think you need to be able to show at least 50,000 hands at a stake to claim to be beating it personally for nlhe.
r.e the tilt thing lots of people say they think that playing other peoples money would stop them tilting but in my experience this really really isnt the case, the thing about tilt is it is just loss of emotional and mental control, and when that happens whose money your playing does loose relevance as much as you think it wouldn't and with all the best will. I have had some EPIC tilted blowups in the past really the only way to aviod it is to
be in a good mood when you play, not tired/hungry/distracted
be playing within a bankroll - if you're playin g a $5k roll getting a horrid suckout for a buyin at 50nl isnt anywhere near as tilting as when playing off a $400 roll
really learn to seperate yourself from results and be able to analsye each play by it's merit win or loose - its obv annoying to play a hand well and get ul, but its just as bad to play a hand badly and win (altho not in the short term lol
)
r.e. volume 20hours a week playing ~80 hands per table per hour 4 tabling = 25,600 hands per month which would be above fine for any of the bankroll backing sites afaik
Not sure if im allowed to say this (take this out of im breaking rules or w/e cos im involved it) but the firm might be a really good place to start as you could get free mentoring with that level of volume and there are one or two EXTREMELY good nl cash game players on the site.
Not wanting to flame/de-rail, just think you will prolly need a bigger proven sample to get backing from one of the sites
feel free to add me on skype (suuprlim) im on pretty much 24/7 (sad lol) if i can help with anything
glglgl