I know that I need motor controllers, and I have picked out Cascadia Rinehart PM250DZ motor controllers. However, I still have the problem what to use for my main controller. I have a fair bit of programming knowledge, so I'm looking for something that keeps my car driveable, but that I can adjust to add new inputs and new features: like using independent steering to lean into turns, or having different modes that I can tune. This is really my biggest gap in knowledge regarding ev construction, so could you help me find a good, dependable computer that I can route all my inputs through, and use to drive my motors?