I agree the ones in the new potting mix don't look too good but if they have new growth in the middle that's a good sign. I would not immediately fertilize new transplants because it can make it harder for them to take up water. The ones in vermiculite will be fine for a while longer unless you leave them in hot sun or wind. If you think it will be much more than a couple of weeks before you can plant them out then maybe transplant them into something deeper. It won't kill them to stay where they are for a while longer as long as they don't get too dried out.
Edit: I should add that you may want to fertilize the ones in vermiculite if they are staying in it and you aren't already. As for the light rain, that's the best time ever for transplanting. Maybe you could do that and then cover them with something if it gets too cold?
Any more questions or do I have to go back to the housework now
