At $600 you want to look at what bonuses will clear quickly at low limits. Party is great. If you find someone offering a stars deposit bonus that is great because it clears really quickly. Paradise also clears rapidly. Avoid absolute / Eurobet / Full tilt / noble etc. These bonuses are only doable at 2/4 and above. In short, party, paradise and stars will give you $250 + whatever you win. In addition to that, Bet 365 will give you the $150 you need to get to a thousand.