Shopping for CNC router to cut wood type

I have been a woodworker for several years but have mostly worked with hand tools and am new to the concept of CNC routers. Professionally I write software and am a cartographer for the US government so I am familiar to the basic concepts behind their use and function. Recently I have started entertaining the concept of using a CNC to assist my sister who is a graphic designer and is opening a letterpress business. The letterpress equipment used in my sister's business uses font cut from wood, linoleum, plastic, and metal. What is the feasibility in using a cnc to cut these plates?

I would only require a working space of 11" x 17" so large size is by no means required but I would still like to know that my abilities will not be hampered by the machine's quality. I am usually the one to take DIY to an absurd degree but with production being my first priority I would like to be able to start working rather than having to spend weeks or months building my own. I have done some research but have received mostly contradictory information and could use a good place to start. Now I'm mostly wondering which brands I should be looking for and what are some I should avoid? I have heard that servo motors are preferred to stepped motors but haven't seen any that did not use stepped motors. Any suggestions would be appreciated.