Blinds: $250-$500 and $50 ante.
Hero: $8,000 stack. A

J

. Been picking up aggression preflop over last 30m as blinds increase. Specifically, raised UTG like 4 out of last 6 hands (had all good hands like AQ, mid pairs, etc, but only showed one, JJ).
Villain: LAG, fairly high VPIP.
Hero raises UTG to $1,250. Folds to small blind V who pushes for $8k more. Hero?