Getting back to the Truck!

[71SWBChevy]

Ok guys so I am starting to get back on my feet cash wise after all the crap I went through in January and I started doing some stuff on the truck today. I am getting the rear end cleaned up for paint and my questions mainly revolve around it.

I am looking for a place to buy brake parts for the rear end, just stock parts, where can I get the best deals on these kinds of parts? Should I hit up a board vendor or stop by my local NAPA?
Also the next order of business will be brake and fuel lines and suspension parts, should I get these from a vendor as well? All this stuff will be going back stock unless there is an upgraded option for about the same money.

Finally what type of paint would you guys recommend on the rear-end?

Thanks for all your help and once everything starts going back together I'll get some pictures up!