Mark1427,
If I had a radicle (same term as a sprout) yes you can go ahead and put them in a container. Get a calendar and count forward 12 weeks and 14 weeks. That is likely when you would want to plant them in their final location or move them larger pots.
If you have 60 nuts, not all will sprout and some that do sprout will not make a seedling. If you hit 50% (I think that is low), do you have a location you can plant 30 chestnut trees properly?
When I move them out of the fridge, I fill all of my trays up. I don't wait for the chestnut to sprout, I have a grow box and it will be warm enough to wake them up.
Nature will reclaim the weak - so losses are part of it. If have 60 chestnuts - could you plant 40 seedlings? 45 would be a 75% success rate and that would be excellent on viable trees / seedlings. I will suggest 40 to 45 will be where you wind up 12 to 14 weeks down the road.
Good luck. Hope my words help you out.
Wayne