Hi,
Instead of being "locked" in an expensive workflow that forces you to buy expensive maintenance (upgrades, support, etc.), you should definetly consider a modular approach, where in the future, you'll only have to upgrade the modules that are critical, etc. Something based on Encofus Switch, Pitstop or Flightcheck for preflight, a simple RIP and an automated imposition solution like On Demand Digital is a powerful, flexible and has a lower TCO.
There are plenty of people on this forum whom have a workflow based on Switch.
Check it out...
Ray Duval
Ultimate Technographics