No stats on opponent but he didn't seem too spewy.

PokerStars No-Limit Hold'em, $0.05 BB (6 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

MP ($10)
CO ($2.90)
Button ($15.86)
Hero (SB) ($4.88)
BB ($13.11)
UTG ($12.54)

Preflop: Hero is SB with J, 7
4 folds, Hero bets $0.20, BB calls $0.15

Flop: ($0.40) A, 7, 10 (2 players)
Hero bets $0.30, BB calls $0.30

Turn: ($1) J (2 players)
Hero bets $0.75, BB calls $0.75

River: ($2.50) 9 (2 players)

Total pot: $2.50

First thing I question is my open preflop since this guy wasn't calling station(bad) or a nit(good), do I need to get involved?

Assuming I lose every time he calls pre, I need him to fold 70% of the time, of course I can cbet and win the pot sometimes but I'm not sure how often he would fold.

Flop seems good to cbet as I don't think he'll continue without an Ace or good Ten. So he should fold out most small pairs.

Calling range = (Ax,T8s+,KQ,QJ,KJ)

Turn bet for value, should it be larger?

River can I still b/f for value or is c/c better? Would you fold this if he bets ~ pot.

All thoughts especially ones on bet sizing appreciated.