The second issue you had (wood dust) can be somewhat handled by the first (what router).
Get yourself the Porter Cable Router with the vacuum attachment handle.
As for costing a fortune, please define a fortune in terms that tell us what it means monetarily, and quality-wise.
I'm going to bet the majority of people who have used them (myself included) will tell you Porter Cable ends up costing very little when compared to replacement costs, headaches due to inferior design, horsepower, features, and durability of other brands.
The Porter Cable line of routers also has to have the most varied and extensive line of attachments for a router out there, which means if there's an application you want to use it for, someone probably thought of it, and made a jig or attachment to make your work easier to do.
As for dust, find yourself a dust mask able to filter down to 5 microns (I think it's microns, anyhoo) and you should GREATLY eliminate your problems with wood dust.
Other measures will also help, such as an air filtration uinit bought or built by yourself, and a vac system, but those are WAY beyond cheap and reasonable solutions to implement for simply building a cab.