It's a lot easier to plan and implement now than when you're at a thousand or more (I initially only wanted 15 customers - break even # at that time;) ). One of the biggest mistakes that I think start ups make is NOT speed limiting the customer when they are 'smaller'. We've done it since day one and have lots of happy customers. I know other WISP's that don't and their customers run to us screaming about how inconsistent their old ISP was. Perception is everything.