mat_luke is running 30/20; according to PTR he doesn't play often. he's been multi tabling but hasn't done anything out of line in the hour we've been playing together. i've been playing my abc TAG game against him so far

is the best river plan to c/c? his raise seemed really odd considering he checked the turn; am i right to think this line is suspicious? i'm not sure how he would perceive my river betting range.

PokerStars Game #42864312369: Hold'em No Limit (€0.25/€0.50 EUR) - 2010/04/18 18:06:39 CT [2010/04/18 19:06:39 ET]
Table 'Herculina II' 6-max Seat #1 is the button
Seat 1: Wesley West (€24.75 in chips)
Seat 2: VI-Popsmak (€100.65 in chips)
Seat 5: mat_luke (€49.45 in chips)
VI-Popsmak: posts small blind €0.25
mat_luke: posts big blind €0.50
*** HOLE CARDS ***
Dealt to VI-Popsmak [Ah Ks]
Wesley West: folds
VI-Popsmak: raises €1.50 to €2
mat_luke: calls €1.50
*** FLOP *** [Js 4h Ac]
VI-Popsmak: bets €3
mat_luke: raises €3 to €6
VI-Popsmak: calls €3
*** TURN *** [Js 4h Ac] [Qh]
VI-Popsmak: checks
mat_luke: checks
*** RIVER *** [Js 4h Ac Qh] [Qs]
VI-Popsmak: bets €11.50
mat_luke: raises €18 to €29.50
VI-Popsmak: folds