if you want a semi-low stance, a 4/6 is your best bet. Some 2" spindles(djm or western chassis), 2" coil springs(belltech, djm, western chassis) and a flip kit for and c-notch for the back(djm, belltech, western chassis). Your tires seem to be pretty big. I'm not sure they would even tuck on a 4/6 if you hit a bump. Do you know the backspacing on the wheels?
www.stylinconcepts.com has great service and pretty good prices. Start off looking there to piece a kit together.