50NL Flopped trips line checkup

Holdem No Limit - $0.5 BB

SB ($62.14)
BB ($115.11)
UTG ($8.90)
MP ($38.12)
CO ($8.28)
Button ($126.82) [Hero]

Hero is Button with A, 8
Preflop: (5 players, $0.75)
2 folds, Hero raises to $2, SB calls $1.75, BB folds

Flop: A, J, A (2 players, $4.5)
SB checks, Hero bets $4, SB calls $4

Turn: T (2 players, $12.5)
SB bets $4, Hero calls $4

River: 7 (2 players, $20.5)
SB bets $8, Hero calls $8

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Villian is an unknown.

How do you like my line here?

I'd minraise the river