Your drawings look just fine! Here are a couple of ideas for consideration...
I have solid plastic for the bottom of my cages. It's a lot easier to get really clean. If you pay attention to where the bunnies like to do their business, you can put a litter box in that corner and that will take care of most of it. Then, I just run a damp paper towel over the plastic bottom of the cage to get out the spills and leftover bits of food. Most days, I also wipe with a disinfectant wipe. (I would do that 1st so that the damp paper towel gets off excess bleach.) If you just let the "stuff" drop through the wire mesh, and a bunny gets sick with something contagious, then you have to clean really thoroughly. I find it difficult to get the wire really brushed off and clean. Maybe I am just not a good cleaner, but I have trouble getting all that gunk off.
The solid bottom cages are also better for bunny feet. They can get sore if they spend too much time on a wire grid. Linoleum works great and so does old kitchen countertop. The way you have them now, their feet are supported because the wire is not too thick and it is flush with the boards. If the wire was suspended over air so that stuff could fall out, you would need to be sure there was some place that they could get onto something solid.
If you want the bunnies to see each other, just don't put a solid "wall" between the cages. You will need support, so use a 1x1 or a 2x2 or something similar front and rear. Be sure to allow some extra room so that you can get the cages in and out easily.
Please post what you finally come up with. I am always looking for new ideas!