Wrong forum but good question. I make the same mistake too when starting out
I wouldn't normally slowplay the flop in this situation. Villain is leading into two players which likely means he has something, so I'm not too worried about losing him. We're deep so we want to start building a pot now so we can get stacks in by the river!
On the turn, against a good player I would be a little bit worried about 75 since that's one of the few hands I would lead here in his spot. But a fish will often lead the flop with just top pair, and now he has trips and isn't folding so we should probably wake up now.
The river is awkward because of stack sizes. We can't really raise/fold, but shoving would be $130->$700 which is pretty huge considering we don't have the nuts. I might just flat and feel really sick for being a nit if showed me 7x, but also save lot's of $ when he shows me 75.
I guess it really depends how likely he his to slowplay 75 on the flop (ie, most fish) vs fastplay it.