How would you play this for value?

How would you play this for value?

PokerStars Game #1704726437: Tournament #7969433, Hold'em No Limit - Level IV (50/100) - 2005/05/15 - 19:19:41 (ET)
Table '7969433 1' Seat #4 is the button
Seat 1: rkelly_42 (3840 in chips)
Seat 2: Jimmbo0069 (2975 in chips)
Seat 4: teeza (13885 in chips)
Seat 6: Unisin (7645 in chips)
Seat 7: hvychv69 (7030 in chips)
Seat 8: jonEcash (3770 in chips) is sitting out
Seat 9: Hemanplayboy (2130 in chips)
Unisin: posts small blind 50
hvychv69: posts big blind 100
*** HOLE CARDS ***
Dealt to Unisin [7c 7d]
jonEcash: folds
Hemanplayboy: folds
rkelly_42: folds
Jimmbo0069: calls 100
teeza: calls 100
Unisin: calls 50
hvychv69: raises 100 to 200
Jimmbo0069: calls 100
teeza: calls 100
Unisin: calls 100
*** FLOP *** [7h 7s 3d]
Unisin: checks
hvychv69: bets 150
Jimmbo0069: folds
teeza: folds
Unisin: calls 150
*** TURN *** [7h 7s 3d] [Qs]
Unisin: checks
hvychv69: bets 250
Unisin: calls 250
*** RIVER *** [7h 7s 3d Qs] [Jc]
Unisin: bets 7045 and is all-in
hvychv69: folds
Unisin collected 1600 from pot
Unisin: shows [7c 7d] (four of a kind, Sevens)
*** SUMMARY ***
Total pot 1600 | Rake 0
Board [7h 7s 3d Qs Jc]
Seat 1: rkelly_42 folded before Flop (didn't bet)
Seat 2: Jimmbo0069 folded on the Flop
Seat 4: teeza (button) folded on the Flop
Seat 6: Unisin (small blind) collected (1600)
Seat 7: hvychv69 (big blind) folded on the River
Seat 8: jonEcash folded before Flop (didn't bet)
Seat 9: Hemanplayboy folded before Flop (didn't bet)

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i think id make about a pot sized bet, in order to get a call there, the all in there, prob. made him think trip 7s off the bat, a little less and maybe he doesnt think that.

I may have checked all the way down. Each round you checked and he bet more. If he had, say 10s or A J, the queen may have scared him when you went all in. If you checked the queen, he may have put you on a small pair (obviously not 7s), and bet a large amount that you could have re-raised. I think that is the only way you get more chips out of this hand.

Anyway, nice hand and pot.