i believe it's OK to size your bets to a bankroll based on future income, provided that you are prepared to lose the whole amount and you don't mind waiting to earn more money if you run out between sessions. Some may disagree with this.

The only problem with a small trip bankroll is if you run out of money in the middle of a hot shoe, or worse in the middle of a hand where you need to split or double. I think with only $300 and an $80 max bet you are going to run into this situation fairly often. I would at least double that amount, preferably more.

> penetration horrible at times to acceptable

Don't play when penetration is horrible. You will be doing your bankroll a favour.