2/4 HORSE stud/8 - too aggro with 2 small pair?

[RubbishCards]

I'm new at the table, no reads.

HORSE - 7 Card Stud High-Low ($2/$4), Ante $0.25 (converter)

3rd Street - (1.00 SB)

Seat 1: xx xx 7[img]/images/graemlins/heart.gif[/img]___folds
Seat 2: xx xx A[img]/images/graemlins/spade.gif[/img]___folds
Hero: 4[img]/images/graemlins/heart.gif[/img] 3[img]/images/graemlins/spade.gif[/img] 3[img]/images/graemlins/club.gif[/img] ___brings in
Seat 4: xx xx 6[img]/images/graemlins/club.gif[/img]___folds
Seat 5: xx xx 3[img]/images/graemlins/diamond.gif[/img]___calls
Seat 6: xx xx 5[img]/images/graemlins/heart.gif[/img]___calls
Seat 7: xx xx A[img]/images/graemlins/club.gif[/img]___calls
Seat 8: xx xx 8[img]/images/graemlins/diamond.gif[/img]___folds

4th Street - (3.00 SB)

Hero: 4[img]/images/graemlins/heart.gif[/img] 3[img]/images/graemlins/spade.gif[/img] 3[img]/images/graemlins/club.gif[/img] 4[img]/images/graemlins/diamond.gif[/img]___bets
Seat 5: xx xx 3[img]/images/graemlins/diamond.gif[/img] 7[img]/images/graemlins/diamond.gif[/img]___calls
Seat 6: xx xx 5[img]/images/graemlins/heart.gif[/img] 2[img]/images/graemlins/diamond.gif[/img]___calls
Seat 7: xx xx A[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/club.gif[/img]___checks___folds

5th Street - (3.00 BB)

Hero: 4[img]/images/graemlins/heart.gif[/img] 3[img]/images/graemlins/spade.gif[/img] 3[img]/images/graemlins/club.gif[/img] 4[img]/images/graemlins/diamond.gif[/img] 2[img]/images/graemlins/club.gif[/img]___bets
Seat 5: xx xx 3[img]/images/graemlins/diamond.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] 8[img]/images/graemlins/heart.gif[/img]___checks___calls
Seat 6: xx xx 5[img]/images/graemlins/heart.gif[/img] 2[img]/images/graemlins/diamond.gif[/img] 6[img]/images/graemlins/heart.gif[/img]___checks___calls

6th Street - (6.00 BB)

Hero: 4[img]/images/graemlins/heart.gif[/img] 3[img]/images/graemlins/spade.gif[/img] 3[img]/images/graemlins/club.gif[/img] 4[img]/images/graemlins/diamond.gif[/img] 2[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/spade.gif[/img]___bets
Seat 5: xx xx 3[img]/images/graemlins/diamond.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] 8[img]/images/graemlins/heart.gif[/img] Q[img]/images/graemlins/diamond.gif[/img]___checks___calls
Seat 6: xx xx 5[img]/images/graemlins/heart.gif[/img] 2[img]/images/graemlins/diamond.gif[/img] 6[img]/images/graemlins/heart.gif[/img] 4[img]/images/graemlins/club.gif[/img]___checks___calls

River - (9.00 BB)

Hero: 4[img]/images/graemlins/heart.gif[/img] 3[img]/images/graemlins/spade.gif[/img] 3[img]/images/graemlins/club.gif[/img] 4[img]/images/graemlins/diamond.gif[/img] 2[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/heart.gif[/img]___checks
Seat 5: xx xx 3[img]/images/graemlins/diamond.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] 8[img]/images/graemlins/heart.gif[/img] Q[img]/images/graemlins/diamond.gif[/img] xx___checks
Seat 6: xx xx 5[img]/images/graemlins/heart.gif[/img] 2[img]/images/graemlins/diamond.gif[/img] 6[img]/images/graemlins/heart.gif[/img] 4[img]/images/graemlins/club.gif[/img] xx___checks

Total pot: (9.00 BB)

I was a bit conflicted all the way through this hand. My hand is soooooo dead, but I keep catching good. Seat 6's board is so scary, but then so is mine and there's 800 dead cards blocking his straight. I have some outs to scoop, but I can easily get scooped myself when someone backs into 2 bigger pair and I inevitably brick the river. On 5th I am betting two small pair and a 3 card low into two all-low boards, but it sort of made sense in my head at the time. And WTF is seat 5 doing on 6th? Should I slow down and take a free card at any point in this hand?