Thanks for the encouragement and ideas!
I think the trickiest part is going to be the lockdown of the first batch because it's going to be a full house in there.
When I remove the turner I'll just put the second batch in a small basket inside the incubator to keep them separate and from getting jostled. Otherwise the hatched chicks basically play soccer with the unhatched eggs.
I'll quickly turn the second batch 2-3 times a day then once first hatch is done and in the brooder, I'll return them to the turner.
I DO have a second incubator but the heater went out in it. I might see if I can fix it for then. That'll be a LOT easier. GREAT suggestion, never would have thought of that. Duh, me!
Either way I'm determined to make it happen!