Ok im about to buy a real suit (Two button Navy Blue Label ralph Lauren) and I tried on a 38 Regular at the store which I felt looked pretty good. However, Im inclined to get a short because of the slightly shorter Jacket Length and sleeves. Question is what considerations are there when making the choice between a Jacket in Short, regular and Long? anything I am overlooking? cause I know I can get it altered by the store for free, so what else should I consider?