I'm in you're boat with just a drill press, and saws. There's plenty of good guys here that will help you machine the parts you need and would be cheaper than outsourcing to an engineering firm. Rather than spend on building an MDF router then spend more to upgrade it later, I would pay someone to machine the parts first time around. You could put your requirements in the request threads, but I'm sure someone will contact you here with help.

Adil