First off, I love the 1101. It is a fantastic trailer. It is only slightly heavier than a 101, which is the golden child of the expo crowd for good reason. It rocks. I have two 1101’s and 4 101A2’s. Wife says “sell some of them” ... I just can’t. I don’t know why, but I just can’t!
Tires, wheels - keep your 8 lug, unless you switch to electric brakes, then just make a wise choice.
Brakes. If you want to ditch the surge brakes and pintle and go to a different hitch, it is pretty easy to remove them, sell it on Steel Soldiers and make a new hitch out of the tongue. I’ll show you mine if you want. It lowers the hitch to a reasonable height.
ETrailer sells electric brakes for the 1101. It’s a simple swap out. Might as well go ahead and put new bearings in the wheels since you have them out anyway (if needed, it’s not necessary).