Running a Novak GTB on 3S?

[SidewaysLS4]

My 1:10 speed buggy is running a GTB/3.5R setup, pulling 85 amps at speed (so far gps'ed @ 63mph, working on tires/best gearing still). I'm really thinking about going 3S for the same/more wattage at less amps (will use a selection of lower KV motors already on hand for this of course). Thing is...I'd hate to just bail on the GTB for a MM, so I looked up what the GTB is made of...

Mosfets at rated at 30v, BEC regulator is rated at 26v. Who knows what else is in there and the ratings on those parts, but I think I got the main stuff covered, so it should work. I also improved the GTB cooling via some simple cooling improvements I learned from my water-cooled hot rod computer hobby, so temps shouldnt be too much of an issue. I'll use a 'SmartStop' for lipo cutoff duties. The only thing I'm wondering about is what is sequencing the motor and its voltage rating, along with the sensor system, so I look to you guys for some advice...

Anyone try a GTB on 3S? Any thoughts on this?