Absolute insanity at 1/3

Playing a crazy game with people going all in blind, lots of shorts stacks, making it difficult to navigate.

Note max bet is 300 at this casino

EP (450) limp, H (350) AdJs in MP bets 15, CO goes all in 28, BU (75) calls, EP calls, H calls

Flop 115
7h8dJd

EP bets 300 (max)

What do you do?