25nl Zoom: flop 2nd and 3rd 5-way - line and sizing okay?

Villain looks nitty over small sample of 15 hands. CO looks like a standard tag over 60 hands.

Flop lead and sizing good? Same for turn and river (plan is to b/f both turn and river)? I think I go too big here on the river, but betting seems mandatory to try and get crying calls from AJ/AQ and maybe AK. He has some nut flushes in his range of course and possibly AT but overall we should be good the majority of the time. I doubt this guy bluffs busted diamond draws if we check river too.

PokerStars Zoom No-Limit Hold'em, $0.25 BB (6 handed) - PokerStars Converter Tool from http://flopturnriver.com

Button ($34.23)
Hero (SB) ($52.11)
BB ($37.60)
UTG ($37.99)
MP ($27.09)
CO ($29.03)

Preflop: Hero is SB with 7, 8
UTG raises to $0.75, MP calls $0.75, CO calls $0.75, 1 fold, Hero calls $0.65, BB calls $0.50

Flop: ($3.75) 7, 8, A (5 players)
Hero bets $2.38, 1 fold, UTG calls $2.38, 1 fold, CO calls $2.38

Turn: ($10.89) 9 (3 players)
Hero bets $5.25, UTG calls $5.25, 1 fold

River: ($21.39) 6 (2 players)
Hero bets $10.75

I prob c/r this flop, I would imagine an UTG opener cbets this flop a lot.

As played, I'm b/f turn but I'm betting bigger, prob ~$8

As played, I'm also b/f river. Sizing is good in relation to how you played the rest of your hand and you can still fold I think if you get jammed on.

I think that you played this hand very well. I think that it's good that you decide to lead this hand. Maybe it would be better if you bet much more on the turn like $7-8, but however I think that it wouldn't change anything to the rest of the hand.