standard play?

[lane mcbride]

Stage #220714945: Seven Card Hi/Lo Normal $1/$2 - 2005-11-07 10:35:14 (ET)
Seat 1 - PLAYER 1 ($56.34 in chips)
Seat 2 - PLAYER 2 ($35.97 in chips)
Seat 3 - PLAYER 3 ($45.83 in chips)
Seat 4 - PLAYER 4 ($26.05 in chips)
Seat 5 - HERO ($30.20 in chips)
Seat 6 - PLAYER 6 ($25.87 in chips)
Seat 7 - PLAYER 7 ($25.15 in chips)
PLAYER 1 - Ante $0.10
PLAYER 3 - Ante $0.10
PLAYER 4 - Ante $0.10
HERO - Ante $0.10
PLAYER 2 - Ante $0.10
PLAYER 7 - Ante $0.10
PLAYER 6 - Ante $0.10
*** 3rd STREET ***
PLAYER 1 - Pocket [H H 7s]
PLAYER 2 - Pocket [H H 8d]
PLAYER 3 - Pocket [H H Kh]
PLAYER 4 - Pocket [H H Js]
HERO - Pocket [6h 2h 3h]
PLAYER 6 - Pocket [H H Ah]
PLAYER 7 - Pocket [H H 4h]
HERO - Bring-In $0.50
PLAYER 6 - Calls $0.50
PLAYER 7 - Calls $0.50
PLAYER 1 - Folds
PLAYER 2 - Folds
PLAYER 3 - Folds
PLAYER 4 - Calls $0.50
*** 4TH STREET ***
PLAYER 4 - Pocket [H H Js 9c]
HERO - Pocket [6h 2h 3h Jd]
PLAYER 6 - Pocket [H H Ah 9h]
PLAYER 7 - Pocket [H H 4h Kd]
PLAYER 6 - Checks
PLAYER 7 - Checks
PLAYER 4 - Checks
HERO - Checks
*** 5TH STREET ***
PLAYER 4 - Pocket [H H Js 9c Qd]
HERO - Pocket [6h 2h 3h Jd 7d]
PLAYER 6 - Pocket [H H Ah 9h 9s]
PLAYER 7 - Pocket [H H 4h Kd Ad]
PLAYER 6 - Bets $2
PLAYER 7 - Calls $2
PLAYER 4 - Folds
HERO - ??????

alright, I thought this was pretty straight forward, but I'm curious to see other people's logic.

a.) what's your course of action on 5th street?
b.) what's your action if player 7 folds?

assume no reads on any of the players