Villain is 42/2/3 in 95 hands.

This all started with a battle of blinds. It is ok to raise with A5o SBxBB against an unknown player in this limits, or should I stop making this move? Then I make a c-bet, he calls and I catch an A on the river. Then I have no clue what to do...

PokerStars No-Limit Hold'em, $0.10 BB (4 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($32.35)
BB ($15.75)
UTG ($8.20)
Button ($8.35)

Preflop: Hero is SB with A, 5.
2 folds, Hero raises to $0.4, BB calls $0.30.

Flop: ($0.80) 8, 6, 2 (2 players)
Hero bets $0.6, BB calls $0.60.

Turn: ($2) A (2 players)
Hero bets $0.6, BB raises to $1.2,

Hero??