Yes they look fertile

Is the vermiculite damp/moistened? I would put them in a tub(with vermiculte) and seal it with Press'nSeal and put that in the incubator.. The hovabator is hard to keep air tight and the mix can dry up. I would keep them at 83 to allow for a little warm up.

The mixture should be damp but if you squeeze a handful you shouldnt be able to wring out ANY water. If water comes out when squeezed it's too wet, add more until it clumps when squeezed but no water.

Congrats on the clutch