Re: Hosting
I would stick with a minimum of a VPS for your install. Either with a company that expands to extremely large VPS resources (like slicehost) or with a company that can eventually get you into a dedicated server if needed (futurehosting). Of course, I will give my plug if you plan on getting large really quickly of (serverbeach.com) if you need large resources right off the bat.
All of the things that PerS mentioned are also good to look at.
Trent
