Tech, I could EASLY put two of those panels over my bedroom. I'd have about 3' between the ladder & panels but would have no way to get past the panels. I have about 96" wide by 108" long between that vent next to the sky light & the ladder (prior post). Also, note to the right of the bathroom vent, I bet I could get a 3rd panel their!
Other option;
Go with the smaller panels & figure out placement & quanity.
I bet a lot of you would KILL to have that much space Eh?
Removing the rear ladder would be an option if I whent with the larger panels.
RM