Need help with lowering and wheels size etc.

[xfsketch]

I finally have the money to buy my rims, tires and lowering supplies. Heres what my truck looks like. Its a 72 LWB custom deluxe, 2wd, 3 spd. On the floor. I have the original stock rallies with beauty rings, an old set of american racing aluminum wheels on it now, factory stance. The rear higher then front. Ive been seeing many nice set ups on here. Really I want to make the truck stance level. The wheels are to be american racing torq thrust IIs. Ive been thinking of size eighteen rims possibly wider in the back. I dont want air ride. I just want a comfortable everyday ride with a level stance and slick chrome wheels! Here is a picture of the a trick I found online that is what I want mine to look like.


Heres my truck now.