Now that I've purchased a set of stainless steel heavy duty spokes from Buchanan's and a set of rear wheel bearings and seals from All Balls I want to get away from the huge rear hub on my '75 CB750F project

Does anyone have ideas on what hub might be suitable? It's gotta have 40 spoke holes. I can make whatever sprocket or disc adapters needed. Other than that I suppose cush drive would be nice? I've seen somewhere that someone used a front hub on the rear, but I have no idea how long the transmission would last without a cush drive.