7 card stud: How much action on 6th street?

My image is somewhat tight and aggressive but fairly solid I guess.

Game is playing tightish with a mix of folding and naked aggression

xiaoxiao777 is somewhat weak/passive
kaccasino is a TAggy hold'em player

PokerStars Game #43678073453: 7 Card Stud Limit ($3/$6 USD) - 2010/05/06 2:42:25 ET
Table 'Eurymedon V' 8-max
Seat 1: honeykissyou ($119 in chips)
Seat 2: Alloranges ($187.75 in chips)
Seat 4: kaccasino ($68.75 in chips)
Seat 5: ogDiego ($156.75 in chips)
Seat 7: xiaoxiao777 ($60.50 in chips)
Seat 8: HenryFnord ($275 in chips)
honeykissyou: posts the ante $0.25
Alloranges: posts the ante $0.25
kaccasino: posts the ante $0.25
ogDiego: posts the ante $0.25
xiaoxiao777: posts the ante $0.25
HenryFnord: posts the ante $0.25
*** 3rd STREET ***
Dealt to honeykissyou [5s]
Dealt to Alloranges [6c]
Dealt to kaccasino [7h]
Dealt to ogDiego [6d]
Dealt to xiaoxiao777 [6s]
Dealt to HenryFnord [Ts Th 5h]
HenryFnord: brings in for $1
honeykissyou: folds
Alloranges: folds
kaccasino: raises $2 to $3
ogDiego: folds
xiaoxiao777: calls $3
HenryFnord: calls $2
*** 4th STREET ***
Dealt to kaccasino [7h] [Jc]
Dealt to xiaoxiao777 [6s] [Ad]
Dealt to HenryFnord [Ts Th 5h] [4s]
xiaoxiao777: checks
HenryFnord: bets $3
kaccasino: calls $3
xiaoxiao777: calls $3
*** 5th STREET ***
Dealt to kaccasino [7h Jc] [4d]
Dealt to xiaoxiao777 [6s Ad] [6h]
Dealt to HenryFnord [Ts Th 5h 4s] [Tc]
xiaoxiao777: bets $6
HenryFnord: raises $6 to $12
kaccasino tanks.....
kaccasino: calls $12
xiaoxiao777: calls $6
*** 6th STREET ***
Dealt to kaccasino [7h Jc 4d] [4c]
Dealt to xiaoxiao777 [6s Ad 6h] [Qs]
Dealt to HenryFnord [Ts Th 5h 4s Tc] [Ah]
xiaoxiao777: checks
HenryFnord: bets $6
kaccasino: raises $6 to $12
xiaoxiao777: calls $12
HenryFnord: wants to re-raise....

kaccasino's play is very weird one 4 is dead, so in order for him to be ahead he had to have 74 or 77 or JJ as the hole card, if he started rolled up he has played it very passively so far, so you are probably ahead I think he probably has like KK/QQ as hole cards, with JJ as a remote possibility

Xiaoxiao is most likely with trip 6's or Aces up, so it is very likely you are ahead of both, I would raise here, if it is capped I will go to check-call mode on 7th