bank roll requirements 2/5 NL at San Manuel in Southern California

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i've switched to NL recently from dinky stakes limit (1/2 and 2/4) and have done really well at full table NL1 at pokerroom and then 6 handed NL1 on tribeca. running about 15PTBB/100 over 15k hands between the two. Running well for sure, but I feel very confident that its not a fluke (although i don't expect that high of a longterm win rate)

I am in vermont where we don't have any legal live games around (well less than a few hours live), and I am going to california for about a month and a half and I will be about 5 minutes from san manuel, where they just started spreading NL within like the last 8 months. I know two people destroying that game, my father and his friend.

Its a 2/5 NL with 100 min 300 max buy in, and I have watched the game before and as probably expected for the most part its uber soft. I have no doubts about being able to beat it in the long run.

My question is this: if i start with min buying (100) would a BR of 1k be pretty safe? I think it would.. very quickly i'd like to be buying in full, but the risk/ruin is definitely too high on the 2.5k BR i have right now. I want to leave as much as possible online.. although i could probably take 1500 to california (and obviously pull out whatever is left if need be) and be fine.