Mark,
They certainly should do well if you spread them out more than I have in my photo above.
If you give them good light, they should be able to handle more moisture and get growing that much sooner. Most times I don't, because all the space under my lights is already taken and too much moisture without being balanced by strong light is not a good thing. Another thing that helps -- once the plantlets form is to give them a little feed (I use a very dilute fertilizer solution and dried insect dust) but be careful not to give them too much at a time, or the balance may again be lost, with possibly dire consequences.
Keep a close eye on them to gauge how they are responding to their conditions. If the light is making them too hot and dry, they must be balanced by more moisture. It's also a sure thing that once they start growing in a bright, moist environment, they will need some feed to keep them growing. It is an intricate balancing act, but a very rewarding one.