400NL deep w/ ak

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Poker Stars, $2/$4 NL Hold'em Cash Game, 5 Players
LegoPoker Hand History Converter

UTG: $410.80
CO: $712.25
BTN: $405
SB: $816.20
Hero (BB): $708.70

Pre-Flop: A K dealt to Hero (BB)
3 folds, SB raises to $12, Hero raises to $52, SB calls $40

Flop: ($104) 7 9 Q (2 Players)
SB checks, Hero checks

Turn: ($104) 3 (2 Players)
SB checks, Hero checks

River: ($104) K (2 Players)
SB checks, Hero bets $74, SB raises to $764.20 and is All-In, Hero???

villian is 24.7/18.7/8 over 150 pretty active. I almost didn't bet the river because i was afraid he might bluff shove. did I induce or is he good and checked JT to me? his name is gp333 fwiw. anyone have history w/ him?