well, i would give the exact opposite advice ( just for flavour )
search ebay and find the cheapest scanners you can find (like 70-100 usd)!!! when starting up, you will not be doing any shows with other people than you present. so you don't need quality. all you need is something to help you set up your projector, learn how to fine tune, align etc etc and then get to know your software at small scan angles that will give you decent kpps rates
so, when the time comes, you will be ready and relatively experienced to get an expensive pair of scanners and make the most out of it
just my (low budget) 2p
"its called character briggs..."