Hello Run It Once,

150€ Deepstack, level 4 blindes 150/300, ante 25.
Starting stack : 15k and i have 18k. MP is a recreationnal player pretty loose preflop and limps/calls with a lot of marginal hands in any position. We don't have a lot of information on the table. Utg reg fish limps, utg+1 too, fish utg+2 too. I miss my sizing and raised with As Kc on low jack at 1150. I didn't see one limper and i definitely prefer to raise larger. It's called by the button, and the three others players.
Flop : Ac 8c 7h. The pot on the flop is 6450, and i have 17k behind. I decided to check and delay cbet. Not sure if ok. But i can go broke in two street i have the Kc, want to protect my checking range flop. Clearly not sure about this check flop.
Button take a 5000 chip and bet rapitedly (and aggressively). He have 7000 behind.
Utg+1 and Utg+2 fold, fish raises all in. He covers me (have 25k chips).

I thought that the button hasn't a lot of two pairs in his range, if not any and had weaker TP, FD...
Not sure about the recreationnal player range, i suppose that i call preflop with A8o, 87o, 77, 88 but certainly fold A7o.
Can he play some combos of AJo this way, and his combo draw+draw with gutshot/pair+FD this way ?

Thank you, i'm afraid that i have completely spew this hand and my tournament.