Another hand to figure out what the heck I am doing on Stud tables...

Here's the look on 3rd:

Dealt to seat1
Dealt to seat3
Dealt to seat4
Dealt to seat5
Dealt to Starstealer
Dealt to seat7
Dealt to seat8

Seat7 has proven to be a very loose aggressive. He has shown a couple of pure bluffs, but has also won with some quality hands. He is probably the most dangerous of the table purely because of his volatility.

Seat1 is a calling station who has hit a number of hands recently - could be perceived as being on a rush.

So seat7 brings in, and is called by seats 1, 4, and 5. I call as well. On fourth, everyone seems to get a brick:

Dealt to seat1
Dealt to seat4
Dealt to seat5
Dealt to Starstealer
Dealt to seat7

seat7 checks, seat1 bets and seats 4 and 5 both fold. I raise, seat7 calls and seat1 reraises. I call, as does seat7.

At this point, I'm not convinced I don't have the best hand. seat1 has been known to bet with any pair - so while jacks are a possibility, so are fives. seat7's flat calls are a little disconcerting, but he usually doesn't start getting aggressive until a scare card hits. Fifth looks like this:

Dealt to seat1
Dealt to Starstealer
Dealt to seat7

I check, and seat7 checks. Seat1 leads, I call and now seat7 raises. Seat1 calls and the action is to me.

At this point, now that I'm looking over the hand, I feel like I shouldn't even be here. I don't know anymore - any comments?

The rest of the hand history is below:

*** 6th STREET ***
Dealt to seat1 [5h Jd 8s]
Dealt to Starstealer [8c 9c 9s 4d Ah]
Dealt to seat7 [2c Ks 7s]
Starstealer: bets $4
seat7: raises $4 to $8
seat1: calls $8
Starstealer: calls $4
*** RIVER ***
Dealt to Starstealer [8c 9c 9s 4d Ah 8h]
Starstealer: checks
seat7: bets $4
seat1: calls $4
Starstealer: calls $4
*** SHOW DOWN ***
seat7: shows [Kc Kh 2c Ks 7s 6d 7h] (a full house, Kings full of Sevens)
seat1: mucks hand
Starstealer: mucks hand
seat7 collected $81.75 from pot