I use vinegar/water solution for wipe downs. I spot clean for a few weeks, then do a good wipe down, sometimes double. Every few months I use a steam cleaner in between. I don't use 50/50 solution though, typically it's more like 1/3 v and 2/3 w. I always wipe dry after too.
The important thing with the wheel placement is to make sure there is clearance all around. Sometimes suggies hang on edge, and of course someone may be near by as well, either way, you don't want them to be bumped.
I move the wheels around, I've had one high, one low, mostly I keep the cage mount in one place for a long time and move the floor stand one around. Lately, it's been the cage mount midway on one side, and the floor stand wheel will either be on the floor, or on a shelf a little higher than the cage mount. I also like to keep the cage mount on the side of cage instead of the back, but mostly because I can get to it easier from the door to remove for cleaning or even wiping down while inside the cage.
As for how you arrange the glider furnishings and your cleaning routine, it may change over time. It does for me, I've tried several different routines as to how I clean the cage. I pretty much have always used the v/w but depending on my schedule and what just seems to work or not work, it changes. I would love to be able to take my cage outside for a good hosing, or even in the shower, but I haven't had the proper location for the cage to do that, or a large enough tub to fit the cage into anyway.
So try different things and see what works for you and your gliders.