Oh I'm so the wrong person to answer this as I normally use 36" blades. With DSI and/or Liberator double bladed sabers.
Im planning on getting a saberstaff with a quick release coupler so i can switch easily between eskrima which im more familiar with and staff techniques which im less familiar with. my friend has a saberstaff without the QR coupler and he says the 32 inch are too long for him to spin it properly so im wondering if it would be better to go with the 32 and have less maneuverability or go with 24 and have a reach disadvantage. i wish US had a 28 inch option in the saber customization options because i think that would be perfect. my friend has i think a Phantasm le and I'm looking at getting the phantom initiate if 24 is the better option
First question is "How tall are you?" The taller you are, the longer the blades you can get away with. On the other hand, I'm 6' 0" and I use 36" blades with 12"+ lengths hilts...
Second question is please define "spin it properly." As I've said, I can spin with no problem with 36" blades. Yes, it took practice, but it's certainly doable.