Thanks for the replies. Mike, your probably right in that I should wait until I feel comfortable. I still have bad nights and make stupid plays. I should also probably work on my aggression before I move up. Right now, it's pretty much fold, fold, fold till I get a good starting hand then play it by the book, which has been profitable but also predictable and almost boring sometimes. I think I need to learn to mix it up a bit.
If 8000 is short, what's a good reliable sample size? 20000? 30000?