Bankroll vs. Cashout math issue

Okay, I need to make some serious profit during the next 4 weeks. I have around a 300 dollar br, and will be using that to play $11 sng's. For a good player,

$11s = 25% ROI
$22s = 20% ROI

Now. I will be playing for 6-8 hours a day, 4 tabling (which those ROI's reflect). Since Im not going to assume Im a "good" player, we can safely assume that I will be making within a -5% range of the posted ROI's.

My question is this: to maximize profits, asap, would it be better to just run the 11's, and skim all profit past $330 br, or to get to $660 br by playing 11's and then skim the profit off of those.

Normally obviously I would just play up to the 22's, but I am looking at a time schedule of 4 weeks, within which I must make $1000. I understand that if extreme negative variance hits, this wont happen, but let's play the averages.

Thank you very much for your help.