Just a checkup, making sure this is the best line. Any alternatives? I'm representing the 7 on the flop, and I assume he'll bet the turn because the flop texture isn't conducive to draws and free card plays.

PokerStars 10/20 Hold'em (2 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Preflop: Hero is BB with J, 8. Button posts a blind of $10.
Hero calls, Button (poster) raises, Hero calls.

Flop: (4 SB) 7, J, J (2 players)
Hero checks, Button bets, Hero raises, Button 3-bets, Hero calls.

Turn: (5 BB) 3 (2 players)
Hero checks, Button bets, Hero raises, Button calls.

River: (9 BB) T (2 players)
Hero bets, Button calls.

Final Pot: 11 BB

Looks good to me.

Sometimes, you could donk the turn and 3-bet if he is aggressive enough to raise.