Thanks for the replies.
Once I make the move, I'll go with option 3 until I figure something else out. In reality, I'm going to hold onto my Florida tag as long as possible. I'll be up to renew my registration at the end of Janurary, so that'll probably when I make the change, assuming I've moved by then.
I've found this bracket:
http://www.bellautomotive.com/License-P ... 6230-8.htm
Its cheap enough that I'm not too worried about breaking the bank and experimenting. Looks like it should be able to mount to the bottom of the front bumper.
To those that offered their factory front plate mounts: thanks, but no thanks.

That's what I'm trying to avoid. I just happened to see that bracket on a Vibe last night, without a plate. If I had bought the car with that installed, it wouldn't bother me, but I'm not a fan. My Vibe is by no means a show queen, but I'm particular enough that I want to avoid drilling holes on the front face of the bumper.