Let me know if I am comprehending correctly. You want to put to 7 inch monitors in between the visors or take the visors out and put the monitors in that location? If you are talking about reeplacing the visors, I really dont think it would look good. I have not seen it done but who knows. Another reason would be mounting location. You have nowhere to mount them at those locations. There are no brackets there only in the middle, you would be drilling screws through the roof.Let me know if you need some 7 inch flip downs, I have a great deal going on right now.
I have seen the rollpans come out like that. I ordered one for my customers before Cal Customs went out of business and it was exactly like you mention tooooo long. His body shop had to end up cutting pieces out of it to get it to fit.
My rollpan hits the trunk lid also, always has It chips the paint off and rubs when I close the trunk too hard. I have a little paint missing and have to touch it up every so often. There isnt really a way around it unless you sand it down.