Villain is a decent conservative TAG player. Whats your play on the river and why? Do you like my idea of pushing all-in?

Party Poker No-Limit Hold'em, $ BB (10 handed) FTR converter on zerodivide.cx

MP1 ($130.65)
MP2 ($306.97)
MP3 ($128.40)
CO ($658.95)
Hero ($615)
SB ($752)
BB ($823)
UTG ($618.60)
UTG+1 ($179.53)
UTG+2 ($216.53)

Preflop: Hero is Button with T, 9. SB posts a blind of $3.
7 folds, Hero raises to $18, 1 fold, BB calls $12.

Flop: ($39) 8, 3, T (2 players)
BB bets $35, Hero calls $35.

Turn: ($109) 7 (2 players)
BB bets $100, Hero calls $100.

River: ($309) 4 (2 players)
BB bets $80, Hero pushes all-in???