Fold equity worth a shot?

[King High]

5/5 Game lots of regular. sb blind is player of intrest. Very tight and protects his hands aggressively stack 1200. 5 limp including me with A9s mp stack 1300.

Flop 9c 8s 10s

Sb checks BB Checks I bet $50 Lp and butoon call 50 SB raises $300. bb Folds

My read is Lp and Button are weak and will not call. I know the Sb blind has at least 2 pair but more likely set - str8. I am 99% sure sb will fold all but the nut str8 to me with a push, Is the chance of his fold + the chance I make my hand worth a push Here.