It's ultimatly up to you so I don't have much to say. Except that only you know at which game your hourly rate will be the highest at, which is the most important thing.

Something else to consider however, is your roll. You should try to have about 1000 big bets ($3000-$4000 @ 1/2 $100 max). Because you have $800, I recommend the lowest possible limits, as per your roll size.