fortunately, you are about the same size as my fiancee and i have already done "homework" to see if her free 175mm campagnolo cranks would be suitable.

according to lennard zinn and several studies a 175mm crankset is perfect for your 32in inseam.
http://www.zinncycles.com/cranks.php
http://www.nettally.com/palmk/crankset.html


several other sources that i found "less credible" showed 172.5


i say try them and see what you think.