Your bike builder should be the one to decide on the length and type of cranks- based on your measurements and on the type of gearing you are going to get.

Handlebars are a very personal thing, but if you are 'short' you may want to consider short reach bars.
I am not short but I love my Salsa Poco short reach ergonomic bars.
Try to test ride both regular shaped drop bars and ergonomic drop bars- people tend to either love them or hate them, depending on how their hands feel on the bends.