i'm not the guy to ask, only flatbed owners can answer that. there were a lot of belt feed models that were horrible that came out, while several true flatbeds at the same time worked properly. fuji/oce early models sell used for around $40k. the only belt feed you can get in your price range is the vutek 200/600. there are a ton of them out there which provides big user base. not photographic. i'd avoid the whole category at $30k unless you are a very mechanical person. you won't be able to get a service contract and if $30k is your budget the repairs are out of your budget. just a single part on some of these machines can be priced like a NASA made it.
for instance here's a thread where someone spent $130,000 keeping a 9840 running
http://www.signs101.com/forums/showthread.php?t=35320&highlight=shutter
or thousands for a piece of metal
http://www.signs101.com/forums/showthread.php?t=93297
for now develop the market, outsource the orders to the big dogs and enjoy the profits. having a semi-decent flatbed in your shop will not be the way to impress your big clients. and whatever you do, do it six months from now after reading extensively on the subject. the fact that you "almost" paid $30k for a 98 series means that you are a sucker waiting to happen.