Hi. Don't forget to factor in how much of the blade is lost inside the emitter of each saber. The normal range for most sabers is 2 - 2.5 inches while some sabers such as the Aeon/Dominix/Initiate and Sentinel/Apprentice lines can take up to 3 - 3.25 inches of blade length.
That being said... a 32" blade would be the best choice for your height. If you can... get an extra 36" blade for the experience and option. A grab bag one is the most cost effective.
A mid-grade blade is half the thickness and weight of a heavy grade. Also more whippy and less emitter top heavy. Depending upon the saber chosen... you may want to purchase another pommel for counterbalance or ballast.