Hi,
this hand isnt spectacular but I dont play so many of them and I would like to get your opinion if i played it correctly.

https://www.weaktight.com/h/5ccb1a9ad39043dd178b473a?simple=1

Were BB vs SB, guy opens 75% of SB. I know that i 3bet about 10% IP, so he can 4bet me kind light. Were 230 BB deep.
Can i call 4bet IP with 87s?
Can i call on flop with bacdoor flush and strait or folding is my only option? I assumed that even if he 4bets me light its still gonna be Ax mostly.

Thanks for opinions.
Nihil