I think you want to fast play this.... just enough to let other people make mathematical errors. There's still a lot of ways to lose this pot. You could get runnered into a higher straight when your 4-5 gets counterfeited. The set that will pay you off could turn into a boat. Two Pair could turn boat here... And of course the flush draw.

Too many ways to lose to safely slowplay. I'm charging my opponents pot sized and more than willing to go all in to protect this hand.