Why not avoid things like running lights for right now and start with less crucial items? Who know, you may develop something we all want. Isn't experimenting part of what makes a good engineer; learning how to do it yourself? Anyone can say "let someone else do it".
I like the idea of having a history of my voltage and current usage that I could chart and see trends in my usage. Maybe even download to my laptop via USB. I know I can do this over NMEA 2000, but then I have to install a NMEA 2000 network which I do not yet have.