Villain is 58/8, huge fish. Your play?

okay

Stack sizes are awkward, particularly with the huge stack in the big blind. I agree with your pre flop bet 700 perfectly.

You can either pot control flop and value town him on a later street or get it in more aggressively on the flop. Pot controlling has its up and downs though and you're going to need really good judgement on future cards. This tends to complicate things so I'd say forget it.

With two villains calling pre flop and the fact that the bigger stack is a huge calling station, I would almost bet more than what you did, maybe 1200-1600, but 1150 is still good. Just know that this commits you and even though the fish might not know it, you're getting it in no matter what the next card is. In this situation you did fine.

On a side note, I know what it's like at these stakes and getting donked is gonna happen. Just remember that you're going to win a lot more chips in these spots than you lose. There are going to be weeks of getting bit in the butt by streaks of bad luck. Don't second guess yourself in obvious spots.

A bit less pre personally, this is fine too
As played 1150 shove any turn is fine