Please help - lowering and tire/wheel size

[chazz]

Need any info and comments on lowering a 63 step side. I want to lower as much as I can on spring only. I see kits with springs, shocks, etc for around $600. My question is will a 3-5 work without any other mods or is another combo better? also I want stock wheels, 6 lug, 15", what do I need? offset?.... also tire size for this. I know someone out there has done trial and error on this. You can see a photo on my page. Any help is greatly appreciated.