Preflop I don't think it's that close; vs 9% (88+,A9s+,KJs+,AJo+,KQo) you have 50%+ equity and given that this is FR I don't think the blinds will be defending too often. However, I don't remember typical FR ranges, so maybe the range I chose there is out of line for UTG+1.
Anyway, in the flop, I think he can be donkbetting things like
JJ,AQs,ATs-A9s,KQs,AQo,KQo
That would be 33% of his range and his top range would be, in this case, all sets (3+3+1=7 combos ~9% of his range), so that looks quite in the spot. You obviously have a lot of equity against that donking range I gave him. However, even against that range, there are J, K, 8 and 9 that shift your equity below a tight value raise on the turn, and it would be around 30% of the deck there that can shift your equity. So my plan here would actually be calling the flop and raising every safe turn. If I get 3bet on a blank, I'd skew his donking range and probably lean towards a FPS of monsters/good hands. In that case, his range would be something on the likes of
QQ+,TT-99,AQs,AQo
against which we have 17% equity, and I think we have a marginal calldown (if I am not mistaken, we'd need about 15% equity for a calldown)
On the other hand, what's your plan with your flop raise?
- If he calls and checks the turn, would you bet/fold? bet/call? check behind?
- If he 3bets the flop, would you call down? fold to scary turns/rivers? raise safe turns?
As I see it, raising the flop IP vs a donk in such a coordinated board... it honestly looks like you are opening your decision tree a lot, and if you have a lot of decisions to make, it's more likely to make a mistake ♦.