Oscar13,
Sorry that we'reall such a bunch of
here. You will eventually get some useful answers.
For now, I would say that the type a new pilot goes to is far more likely to be determined by ability and suitability than dimensions. Unless you are abnormally tall/fat/dwarfish/etc, the limitations these days aren't that tight. Not to say that there aren't limits, but many don't find themselves streamed on that basis.
Persevere and someone here will offer some guidance or point you in the right direction.