If need be, if I had a cart next to the mill at about table height, I could muscle it on. I don't have any problems with my 6" machine vice, and this is only 30% more
Realistically, I'll probably put a cheap chain hoist on a short piece of rail near the mill, off to the side of the head. Travel the table over, set the rotary table down, travel table back, now with rotary table centered on the machine's table. I'm really tempted to buy the 6" now, but I think I will regret the limits that places on work holding for the size parts I may want to put on it.
-Steve