Cake Poker / PPC Emulation

[skates]

I'm using a PowerBook G4 and have Virtual PC 7 installed with Windows XP. I'm trying to leave Full Tilt so that I can receive rakeback, but have read too much about AP's shotty practices, which is basically the only other "decent" site with a mac client. I'm in the US, so I'm limited to only a few sites, namely UB, Party (FPPs), and Cake. I'm not sure how fast PT will run in a virtual environment, so when choosing somewhere to build a new roll (starting at 100NL), is Cake my best bet? Cake allows players to change their nickname each week. Is this something that alot of players do? Will I be leaving alot of money on the table by not using PT? Any thoughts/experiences from anyone?