Your plants may not notice much difference between the 4700K and 5500K bulbs. Next time, if available, buy the bluer bulbs (higher K temperature) for vegging, but either one will probably work fine.

And, yes, for flowering, use the reddest (lowest temperature K) bulb such as the 2700K bulb you mention.

With those larger pots, your sprouts may be spread out too much. Next time, germinate your seeds in smaller pots or even small plastic cups, set closer together. You can then place MORE light bulbs CLOSER together for greater light concentration over a smaller germinating area. After the seedlings have their third node (third pair of branches), they will be considered small plants, ready to transplant into larger pots (like those you are using now) for continued vegging.

With regular fluorescent TUBES, you can allow the leaves to even touch the bulb. Even though CFLs might be a bit hotter, you can certainly have the CFL within an inch or two or the top leaf. Worst case the part of the leaf closest to the CFL may burn. It will be obvious; so just move the light a little further to avoid burning. After you have a few plants (with a few more leaves!) you can experiment and verify for yourself whether touching the bulb will burn part of the leaf or not.

Providing more light than needed won't hurt unless the heat is too much for the plant. This is wasteful only electricity-wise and money-wise: the plants will simply not use any extra light they don't need. On the other hand, too little light will cause unwanted stretching and less vigorous growth. It might be best to err on the side of a little too MUCH light!

Other than that, you seem to be doing fine :thumbsup:, and your camera skills may well help you get better answers if problems develop or questions arise!