The Texan, I did not say the larger trailer would not work. Just that they are over my general guideline for a new RVer. Saying if towing at the very max the OP needs to adjust his expectations. Everyone is different. Very doable for some and white knuckles for others. I have no inclination on what type person the OP or DW might be. You or me might go 12,000+ gvwr trailer but that does not mean I would call it slam dunk easy for everyone.
Only indication was the word "realistic" in the title. Not "I need to figure out how to tow this" or "what is the very max" or "just bought the trailer, must make it work"