Need help!! Would love some advice

[CHASE71]

Hello everybody i am new to this awsome site and i just bought a 71 swb fleetside. I know i want to run 17" cragar s/s with as tall a tire as possible. I am also looking at getting a stage 1 airbag kit from airtech that will give me a 3-4 drop fully inflated and will drop another 3" deflated. So before i pull the trigger and start spending money i would love some advice. Here are a few questions.

How wide of a rim can i run front/back?

What offset if any should i get?

How large a tire can i run?

W/ bags do you have to run fully inflated or can you drop pressure and say go with a 3-5 drop?

I know i will probably need a c-noch kit. Is there any other suspension components i need? Will i have problem w/ the drive shaft hitting?

Also im going to replace the existing cab w/ one off of a 68, what kind of problems should i expect if any?

Any advice, suggestions or pics of what i am talking about would help me get started, and would be greatly appreciated. Sorry i dont have any pics posted but i will get them up soon.

Thanks
chase