Rimp  pot and I got Flop Nut Straight I bet 150 I can't slow play with this board and 3 opponents. I got called and Turn MotherFxxker Ace of heart I check and Caller shove I think He call with any flash draw mainly I don't want take risk of about 60% stack (If I lose my stack 710) with exact situetion, and I diside to fold,

 Is this nit?