Hello hardo,
I'd raise the flop even bigger ~$1,60 and the same goes for turn where I'd also raise it bigger than so small and give him great odds.
But as played the river it's kind of close, what about W$SD? With WTSD I can't really do much here, just I see that he doesn't go to showdowns a lot. While we are so deep it's really close. The only hope is that the guy overplayed any kind of 2pair type hands here but which might even not happen while we have shown so much strength on all streets. So might even be safer idea to fold on the river while a lot better sets possible and which are likely in his range. Seems also like a trap from right the flop with those min-bets.
Best Regards.