J8 flops 2 pair on Bubble

Would go for smaller cbet which ever is your standard. Flop offers flush draw, but I would not assume villain to have that many straight draw combos in his range. When you cbet that big I doubt he would continue that often with bare A high type of hand.

So my line would be to 3barrel for value without board developing in ugly way. With cbet of ~400, turn ~800 and shove in river. Allows villain to do more spewy stuff and overall with my whole range I do not want to cbet this huge.

Although I think flop cbet is on the bigger side, I would still go all in by the turn. I bet flop like 450 and then just shove turn for about 1 ps size left. But you can take alternative lines. I doubt this is a flop you always cbet as a bluff, because it does hit your opponent's perceived range(although not as much as normally, because we have the BB very short). So you can either cbet-check turn to induce if you have reads. Or just check flop and try to get him to spew. Some aggro regs are gonna go crazy once you check, this way you also balance for the times you have Ax, or mid pair or nothing.

+ 337pre seems to me bigger than necessary...just 2x T100+