nervous about graduating

[scott111]

I'm about to make 300 BB on the .25/.50 at UB and my plan is to move up to .50/1 once I get there. I've been keeping a spreadsheet for the last 2500 hands just keeping track of the bottom line. Not counting converted bonuses I'm at 6.2 BB/100. Before starting to keep track I probably played about 10K to 15K hands since learning the game 6 months ago. My question is, how big of a hit can I expect to take when I move up? Is it likely that I will be profitable when I just start?