There are pro's and cons for a short or tall girl.
For example;
Short girls are easily curled with one arm when you tap them in the shower, tall girls are great for bending over desks, kitchen counters or whatever when the urge takes you then.
IMO tall chicks is only a problem if they're taller than you are. Instant fail.
As for fat, the only upside I've ever heard about fat girls (if you can call it that) is that, like mopeds, they can occasionally be fun to ride until your friends find out.