suspension lift help for a 67k10

[1967K10]

I posted this question earlier, but in the wrong thread. I have a 67K10 shortbed I would love to put a new set of wheels and tires along with a suspension lift on. This will be my first attempt at altering the suspension on a truck and welcome all and any advice.

4" of suspension lift and a 33" or 35" tire are what I have my sights on, but am unsure which will work best. The truck will not see any bone jarring offroad use and I am running a strong stroker engine, so turning a 35" tire wont be a ppoblem.

Also, are there any pro's or con's in going to a 15" while vice a 16"? Thanks for the help!

Here is a pic of the truck.

~Heath