Cracking job Stefan, each new figure is a learning curve s well as a challenge and is really worth the time you put in.
As you mentioned, yes let each bit dry before moving on, it does slow the process but save squishing what just took you ages to do. I read a tip on another forum from our own Paul Handley about smoothing out the Magicsculpt, he advocate a slight dab of olive oil. I can't attest to this as I've always used water but it sounds good and I'm going to try it, mind it'll need decreasing before painting.
Looking forward to your next project.
Cheers Simon