A tent for sleeping need not be "Tall" I used to sleep in one shorter than I am back when I first... Well it's where I spent my Honeymoon.. Height was not an issue :). Rain resistance was.. When we first set it up we quickly found a few pin holes.. Found that SEAL ALL (tm) works on wet canvas real good. Though we still had Niagara Falls. (The name of the KOA we were camping in) they were OUTSIDE the Tent. (Hey, I'm a traditionalist).
Only concern: SOME RV parks get kind of .. anal.. where tents are concerned,, Others no problem.