suspension upgrades for a '69 c10

[ryans69chevy]

I'm wondering which route to take with my '69 chevy c10. It's a 2wd longbed and I'm going to do a frame off resto. I sold the 307 and throwing in a 454 with a tremec 6 speed. I'm going to need disc brakes for sure. I really like the wilwood brake system. What I'm wondering is if I should do all around disc brakes or just the fronts? Right now it's just drum brake system. What size rotors should I go with? I want to keep it a 6 lug as well.

I like the way the original suspension rides and everything, but is there some modifications I should do since I'm going this indepth that would be a good investment and make the truck ride even better? I'm not going to lower my truck, I'm going to keep the same height.

I'd love to hear your ideas of what I should do and pics would help also.

Thanks,
Ryan