All your plants look fine and healthy. Except the 4th one, it looks a little toasted . The third picture just looks yellow, I don't think it is. Light green perhaps?

Anyways...I wouldn't transplant quite yet. You want to wait till your plants have a strong enough root system to you can just pull the whole dirt clump out, in one peice, roots and all. The best time to do this is about 2-3 weeks into growth. Wait until they have about 4 sets of leaves on them. Let the soil dry out, then take a butter knife, go all around the inside edge of the cup, carefully, then gently, VERY gently, pull up on the plants stem and the whole dirt clump, roots and all, should come out in one peice. Keeping it all in one peice is very important, it is less stress on the plant. The soil MUST be dry, and if it doesn't come loose after lossening it up, then don't force it. Wait a few more days or so and try again.

That's what I do anyways and my plant goes through little to no shock. Recovers in just a few days. Hope this helps. good luck!