A/T vs M/T. Depends on what you what your truck to do/what you do with the truck.
On your 2wd Edge, you can fit up to 32x11.50R15 or 33x10.50R15 by cranking the torsion bars up some. Many run and have ran that setup just fine w/o any rubbing, including myself. You're 2wd is exactly like the 4x4's suspension wise and ride height...you have torsion bars Search to find the how-to.
Lots of your questions can be answered by just browsing peoples rides....seeing what they've done...seeing what you like. Alot of the others can be answered via the "sticky" threads at the top of each section of the site.
Here's some pics and links to member's profiles. I may have to keep it to shades of blue because your Bright Island Blue color is kind of a rare color. Some are posted for wheels/tires. Others are posted for color combos. Why I'm showing them will be noted.
RF member Focer
. STOCK truck with 31x10.50R15 Toyo M/T's on Ultra Rogue type 175.
RF member Seed60
. Black - n - blue. (4x4, 8" lift, 35's)
RF member jrpro130
. Bright Island with I believe 3" spindle lift and 33x12.50's on black steelies...
Newer setup....Bright Island with polished alloys. (2wd, 3" spindle, 3" bodylift, 35's)
Another with Bright Island Blue and polished alloys...(4x4, 7" lift, 35's)
RF member black-n-blue
. Bright Island 2wd, 3" spindle, 33x12.50 on black Soft 8's