Hang onto that "scared" feeling! It's what I call "the good sort of being scared" and it's completely appropriate to taking a big step like you are doing.

It also makes it all a big adventure. The fact of knowing the area a bit and knowing people in the area should be enough to make a go of it. Just remember that everything you know to now is probably going to be proven wrong. <g> Get used to making a few mistakes and being able to laugh at yourself for them and you'll be just fine.
Cheers,
Bev