Well, i guess this works (at least well enough to get by) but i don't think you should have to go to all the hassle to set up all these planes and mess with the camera setting just to get a half decent image.
How, are you setting up your nodes, With the Layered shader? When ever i set up multi textures on a Layered shader i don't seem to have any of the problems you seem to have, with textures changing, or appearing different.
Well, i hope you get this problem sorted out.
"Your weapons are no match for ours! People of Mars, surrender!"
"Um, this isn't Mars. This is Earth."
"Earth? Earth-with-nuclear-weapons Earth?"
[long pause] "Friend!!"