Switching phal from Sphag to S/H - Are they ready to be repotted?

[scy]

After reading some of the posts in this forum, I have decided to switch to semi-hydroponics. I am very excited to give it a try after reading about how your orchids love it! I had some questions to ask before I got started. I just purchased two young phals, and they arrived potted in sphagnum moss. I've read on Ray's site and through the forums that it's important to repot into the s/h when there is active growth.

1. I've taken some photos of what I think are new roots. Would these two would be prime candidates for me to repot into s/h? If so, I plan on doing so asap. I have already purchased the material from First Ray's and prepared the medium as per the instructions provided.

2. If it is not ready to repotted:
a. How can I tell from the roots when it is ready for the switch?
b. How do I repot the sphagnum moss to make sure that it is not overpacked from the seller?
c. How do I water the sphag to make sure I do not drown it?

I just received the orchids 2 days ago. I am using a spray bottle to lightly spray the moss so that it is damp and not drenched. I am careful to avoid the crown and leaves. I do not think this is enough to get through the pot but am afraid to overwater. Sorry if my questions seem silly but I'm a newbie. Any help would be greatly appreciated! Thanks!