My first play along - 44 flops a draw

[NIX]

If you're going to call 2 bets the first time, I think you should easily be calling 2 bets the second time. So I do that. MP2 raised PF, so I have him on an OP. No way he has a straight. If MP1 has a straight, good for him, but I think his range has to include 6x, 65s, sets, and weaker overpairs. I still figure we have ~6 outs, some maybe to a chop and odds to call.

Also, I'd at least entertain the idea of donking the flop. If MP2 has overcards, he may not bet again and the pot is big enough that you can get several peels and get value now for your straight draw. Plus with you having two of the 4s, it's less likely people are on the same draw.