Ok, guys. Got my brackets in the mail. Running two G6’s on each spindle. 758 with a 60HC deck. Definitely more noise and vibration. When I say vibration, I mean general. Like the rattle from the anti scalp wheels in the deck holes. Now, the cut is superb!!! I mean beautiful!! More than I ever imagined. Ran it into some 8 inch field grass with deck set to 4 inches. Just a beautiful cut.
As far as starting up the deck, half power gets it turning fine. I also slow it back down to half before disengaging the pto. I do imagine there will be more general wear and tear. How much? I just don’t know.