Bagging a ram

Im about to start bagging my ram and I wanted to get some info as to what I need to have for the front to lay on 20x8.5" and 45 series rubber. Im going with the 10" notch and lever style triangulated 4 link to get the rear to lay, and I also know that I need a crossmember for the automatic tranny. Belltech makes spindles and DJM makes control arms but I dont know if im going to need one or the other or both, and which will give me less negative camber up front. I also was wondering if I should make my own bag cups or If I could buy a set somewhere and save myself the work.