[PLO2] AAxx on dry board

I often conflicted with these situations and I am not sure if b/f is the correct line. What do you think. How much equity do you have on these boards?

I gave him a range of somthing like this. Is this logical?
RANGE[H:K8**,88**,KK**,*c*c**,567*]

We have just 23% equity against this kind of range. What do you think?

PokerStars - $0.02 PL Hi FAST (6 max) - Omaha Hi - 6 players
Hand converted by PokerTracker 4

BTN: 80 BB
SB: 101 BB
BB: 178 BB
UTG: 114 BB
MP: 112.5 BB
Hero (CO): 103 BB

SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has A♥ 2♠ 9♥ A♣

fold, MP raises to 3.5 BB, Hero raises to 12 BB, fold, fold, fold, MP calls 8.5 BB

Flop: (25.5 BB, 2 players) K♣ 4♣ 8♦
MP checks, Hero bets 24.5 BB, MP raises to 98 BB, fold