Trips vs massive xbetting player

Hello,

V is 60/2, always xbetting

Poker Stars, $0.02/$0.05 No Limit Hold'em Cash, 5 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.

Hero (SB): $5 (100 bb)
BB: $7.17 (143.4 bb)
MP: $7.74 (154.8 bb)
CO: $5.28 (105.6 bb)
BTN: $3.46 (69.2 bb)

Preflop: Hero is SB with A 9
MP calls $0.05, 2 folds, Hero raises to $0.25, BB folds, MP calls $0.20

Flop: ($0.55) 8 4 A (2 players)
Hero bets $0.29, MP calls $0.29

Turn: ($1.13) K (2 players)
Hero checks, MP bets $0.55, Hero calls $0.55

River: ($2.23) A (2 players)
Hero checks, MP bets $2.15, Hero calls $2.15

What do you think about river x/r?
vs only Ax + FH I get:

Board: 8♣4♠A♣ K♦ A♦
       Equity  WIn Draw
MP2    59.48%   56.66%    2.83% { KK, 88, 44, A2s+, A2o+ }
SB     40.52%   37.69%    2.83% { Ah9c }

But if I add only KQ:

Board: 8♣4♠A♣ K♦ A♦
       Equity  WIn Draw
MP2    48.47%   46.17%    2.30% { KK, 88, 44, A2s+, KQs, A2o+, KQo }
SB     51.53%   49.22%    2.30% { Ah9c }