Thanks for all the replies everyone.
I am going to gain 3 to four inches on whatever spring size I choose. The way I am going to mount the srpings to the frame, is going to add 3 inches maybe a tad bit more.

So im thinking of not using my springs I have and going with a toyota spring around 4 or 6 inches. I should be able to fit 37's pretty easy.

What's the satisfaction of paying someone to do the work......jump in learn and make a lot of mistakes....