Jcrew university coat regular vs slim

This should have been posted in the j.crew thread or the small question thread. That said, I've tried on both of these in XS, which is what you would probably want. The regular cut is a narrow box shape, with wider sleeves. The slim-fit is roughly more v-shaped with slightly more tapered arms, which is better for thin people with more athletic proportions.

I own the regular University Coat in XS here are some measurements:

Shoulder to Shoulder: 16''
P2P: 18''
Length: ~30.5'' my primary concern given your height.

I am 5'10'' and 130 lbs I can post some fit pics if you want. I can't say what these measurements are versus the slim version of the coat.