what an interesting project. a few thoughts. First, as I read it, the plow is only 11 feet wide. For the size of that tractor, 11 feet is NOT very big. On the other hand, your basic backhoe isn't going ot push it either.
Towing with a trailer. There is a reason that they don't put trailer hitches on articulating tractors. When you turn the steering wheel with the tractor not moving, weird things happen with the rear of the tractor. It is kind of weird to get used to.
Years ago I ran a vermeer twin rake. Basically, it had a boom, and was similar to your idea of two trailers. It was IMPOSSIBLE to back up. I don't know if you would ever need to back up.
How about get rid of the plow? Bear with me.
Lose the plow, keep the brooms. Turn the brooms so they sweep snow away from the center, and off to the side. Then mount two blowers side by side in front of the tractor.
So, from the front, is a triangle. The brooms in front, then two self powered blowers mounted side by side, all mounted off the front of the tractor.
Because you are always doing runways, you can probably make the "rule" that you always blow to the "right". Then you can get your blowers mounted such that the snow goes out the sides of the blower below your line of sight.
Does this make sense?