poppy's mccalls 5513 muslin

this is my first ever muslin and only 2nd coat so I'm nervous/ excited for the outcome:

I'm short (5' 3") usually I need to shorten but the pattern is such that I don't think it matters if I shorten?  it only allows 1" ease on top, I would say I have about 1/2" across the bust. otherwise its pretty loose fitting waist and below.

here's  the pattern link any comments welcome, thanks.