This is going to look absolutely hideous if they VE the cladding. As far as the height goes, I think what ever the number is, this does very well to fit in push the envelope a little.
Also, as perhaps has been said before, this offset window thing has run its course. Is there some some sort of panel that convenes and decides whether they want 2 over here and 3 over there and 1 here and 4 there? Is there some software that you can use with CAD to just click a button that says "randomize windows"? Why not randomize them horizontally instead, just for giggles?