I chose to use 3- double motor - flywheel drive units to deliver power to a much lighter platter than yours. My thought was that when the system was up to speed, the spyder wire drive belts from the motor pods to the table would deliver noise free, constant power to the platter.
One of my best friends and member of my audio group recently purchased a Kuzma Stabi XL with Kuzma Air Line arm. It sits on the same stand as his Walker Proscenium, (which is identical to mine).
The Kuzma uses two motors and belts to drive the platter and the sound is extraordinary. I rate these two tables VERY close, regardless of differences in drive systems and design.
So, if your motors work, they work. I have no predisposed ideas as to one method being better than another, I just go by sound.
I realize you say what you mean. When one man does all the thinking, mistakes of omission are the result. I appreciate your constructive criticism.
I hope your not confusing my post with another, I have no criticism and would not have unless I had first hand experience. I'm just amazed at the hard work you've put in. I know how hard it is to create things from scratch. I've been a hands on guy since pre teen years when I worked on my bicycle and motorcycles to throw a paper route.
I have great respect for DIY people, they keep this business alive. All the great stuff that represents high end at CES is little guys that not so long ago had a dream that came true.
My Aesthetix pre and phono, Walker table, Purist cables, custom tube crossover and equipment stands are from guys that were DIY and began building stereo equipment they believed in. All I can say is "bless them,"