[rachelwxm]

I think a push is good if you think there is enough chance he had 8 or J8 here and he would call the huge overbet. But based on his passive action, I don't think he is likely to have J8. And I think it's a tough call for a lone 8 if he is any decent.

I fold 8 here 100% since your large over bet with 4 to a straight at least representing a straight to me. Any chance that you might have the higher straight is a free EV for you. Based on your turn action, I think it's very likely.

I think if he is bad enough to call with 8, don't you think if you lead 2/3 pot on river, he might reraise and then make a crying call there? So there is a chance you get his stack anyway if he has the 8 and there is some good chance he calls you 2/3 pot size with any other marginal hands?

If he bet the river, I think all in is a very good move.

I am still learing this game.