Flopped flush, how would you extract chips from a big stack?

PokerStars Game #2985026691: Tournament #14414140, Hold'em No Limit - Level X (400/800) - 2005/11/06 - 00:44:19 (ET)
Table '14414140 135' Seat #3 is the button
Seat 1: sw23 (16755 in chips)
Seat 2: Devil42 (49690 in chips)
Seat 3: ErickW23 (17030 in chips)
Seat 4: SlidyMcGurk (20510 in chips)
Seat 5: goldyfishy (22275 in chips)
Seat 6: blackwolf956 (45450 in chips)
Seat 7: Xantcha (10265 in chips)
Seat 8: nivlac (13247 in chips)
Seat 9: jdc_1784 (57255 in chips)
sw23: posts the ante 50
Devil42: posts the ante 50
ErickW23: posts the ante 50
SlidyMcGurk: posts the ante 50
goldyfishy: posts the ante 50
blackwolf956: posts the ante 50
Xantcha: posts the ante 50
nivlac: posts the ante 50
jdc_1784: posts the ante 50
SlidyMcGurk: posts small blind 400
goldyfishy: posts big blind 800
*** HOLE CARDS ***
Dealt to goldyfishy [Kc Qc]
blackwolf956: folds
Xantcha: folds
nivlac: folds
jdc_1784: calls 800
sw23: folds
Devil42: folds
ErickW23: folds
SlidyMcGurk: calls 400
goldyfishy: raises 1600 to 2400
jdc_1784: calls 1600
SlidyMcGurk: folds
*** FLOP *** [5c 7c 8c]
goldyfishy: bets 1800
jdc_1784: calls 1800
*** TURN *** [5c 7c 8c] [Th]
goldyfishy: checks
jdc_1784: bets 3200
goldyfishy: calls 3200
*** RIVER *** [5c 7c 8c Th] [6h]
goldyfishy: bets 6000
jdc_1784: calls 6000
*** SHOW DOWN ***
goldyfishy: shows [Kc Qc] (a flush, King high)
jdc_1784: mucks hand
goldyfishy collected 28050 from pot


How's my line? There was a chance big stack was limping a monster, but I felt a preflop raise was warranted. Should I have bet more? I was trying to look weak and have big stack reraise me. Any tips on extracting the most chips is welcome.

Also, should I be prepared to lost all my chips to a higher flush?

The check-call on the turn seems out of place to me. I would either bet out or C/R there. I'm no expert or anything, but Betting out, then check/calling, then betting out on the river seems like a strange line to me.

Well there is the danger of him having Ac and getting another club, but other than that, I'd like him to catch something, so that he will test my weak line here. I felt that if he caught something on the river he'd probably reraise me or call me, whereas he might fold to a river reraise.