1) Villain is 17/8/2.5 over small sample. No reads.

PokerStars No-Limit Hold'em, $0.50 BB (5 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($52.45)
Button ($50)
SB ($51.75)
BB ($50)
UTG ($30.05)

Preflop: Hero is MP with A, A.
1 fold, Hero raises to $2, 2 folds, BB calls $1.50.

Flop: ($4.25) J, K, 3 (2 players)
BB checks, Hero bets $3, BB raises to $8.5, Hero calls $5.50.

Turn: ($21.25) T (2 players)
BB checks, Hero bets $17

2)Villain is 33/20/2.75
Should I be raising the flop here or donking into him?

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver Cards)

SB ($54.75)
Hero ($49.75)
UTG ($46.70)
MP ($46.05)
CO ($49.75)
Button ($48.75)

Preflop: Hero is BB with , .
3 folds, Button raises to $2, 1 fold, Hero calls $1.50.

Flop: ($4.25) , , (2 players)
Hero checks, Button bets $4, Hero calls $4.

Turn: ($12.25) (2 players)
Hero bets $8, Button raises to $42, Hero folds.

Final Pot: $28.25