It looks like a fun project Ben, thanks for posting pics etc. Others have advised to stick to a plan and I'll second that advice. Between here and the Hamb there's some very talented people that'll help - like the poster above me, TinBasher.
What you might consider is to post a picture of a car similar to what you want to build, people on here can supply the steps on how to get from here to there.
One of the fun things in building is developing the skills, you should consider a metalshop class os some sort. You'll need to learn to weld and move sheetmetal around so's you can do your patchpanels and frame work. Developing these skills is what gives us a deeper appreciation of our sicknes...hobby, thats what I meant, our hobby.