Monday 4/16: When I got home from my tragic day at DMV I was happy to find my new spacers sitting in my mailbox. This brought a smile to my face! I jacked up the trailer and took the wheels off.
Once the spacers were one, I noticed the new lug bolts stuck out past the spacer. Usually this would be a problem. Luckily my JK Moab rims had a recessed area between the lug holes. They were more than deep enough for the extended lug bolts.
the next concern was the hub center cap also protruded out. Again, the JK Moab rims had a nice recessed area in the center, too. I couldn't eyeball it to see if it was deep enough. Even with micrometer, I wasn't sure of my measurement because of the plastic tabs that hold on the plastic Jeep logo'd center cap.
So, I removed the plastic Jeep logo'd center cap by removing the spring loaded clip on the inside of the plastic cap, then slowly tapping it out. Then, I installed the tire. Perfect! I had plenty of room.
The 1.5" bolt pattern adapter (along with the 1/2" spacer were perfect in making a solid platform and gave me more than enough to account for the backspacing. If the lug bolts were shorter, I probably could have gone with a 1.25" bolt pattern adapter.
Here's a before and after.

A few of my neighbors came by and said, "Damn! That looks freakin sweet"! I could not agree more.
I noticed that the front of the right fender was sitting closer than the left. The left had 1.5" clearance and the right had 1-7/8" clearance. So, I had all the guys climb into the tub and weight it down. The trailer didn't seem to move much, but with (approx) 425lbs, the front of the right fender was touching the tire. With (approx) 560lbs, the left fender still had clearance. With a bouncing payload, both fenders rubbed.
Cross country payload is maxed at 500lbs. So, the left one is probably good. The right one needed to be stretched out a bit.
After further inspection, it looked like maybe someone rammed that fender against something, or kicked it in with their foot. Sucks. I hitched the trailer to the jeep, hooked up a hooked cable to the fender, hooked the other end to my Hi-Lift, hooked the other end of the Hi-Lift to my rear bumper, and ratcheted the fender outwards.
After several attempts, I could not get it to stretch properly. The only solution was to cut or break the weld, stretch it, and re-weld the fender.
Success! We snapped the weld and now the fender has good clearance. Geoff was good enough to schedule me some time to bring the trailer over on Thursday evening to re-weld it.
Tonight, I cleaned up the area and it's ready for a little TLC from Showboat. Man, I was felling pretty good!
I did have some bad news though. The Scepter CARB 5gal Jerry cans don't fit the Blitz style Jerry can carriers. The Scepter can got wider as it went down, making them 3/4" wider than the traditional Jerry cans. The plus is that these cans are actually 5.3gal, but now I need a new solution for carrying these cans. I'm thinking I may mount them in front of the fender but have them lying down to reduce the profile.