Downgrade-jailbreak-unlock from 4.0 to 3.1.3 on 3G

[eastercat]

I'm planning to downgrade from 4.0 to 3.1.3 on my 3G. In addition, I will also be jailbreaking and unlocking (I plan on selling it to a co-worker). However, I wanted to double check my plan of action. I figure it's better to foul up here than with my phone.
edit: I'm on iTunes 9.2.1 (4)

1. Downgrade using http://lifehacker.com/5572003/how-to...your-iphone-3g to 3.1.3

2. Jailbreak using: (here's where I'm not sure about the plan of action)
a. redsn0w_mac_0.9.5b5-5
b. redsn0w-mac_0.9.4
c. Is there another choice?

3. Unlock using ultrasnow

Will I mess anything up if I choose to use redsnow 0.9.4 over 0.9.5b5-5?
If it looks good, I'll give it a try within a couple of days.

Thanks in advance.

 

[eastercat]

Success.
A couple of things learned. Since I unlocked with redsn0w-mac_0.9.4, I should've tried to downgrade to iPhone1,2_3.1.2_7D11. Because I didn't, I had to wait (briefly) for iPhone1,2_3.1.2_7D11 to d/l so it'd work with redsnow.
Otherwise, everything went smoothly.