Both the Total kit and the Spirit seem to be good choices. I chose the Total because I had seen and read so much about their product. They also have a lot more options, their catalog is jammed packed with T stuff and the tech support has been awesome. Basicaly, just do your research on both and make your decision. Call them or go see them if you can, like Mike did.
As far as the titling, I called my DMV before I started and they gave me a nice short list of all the things I would need. Rule of thumb, take photos, get a rubbing of the chassis number and keep all your reciepts. Most state DMV's have a website that can be real helpful.
I also found that setting a realistic goal of what you want it to be when you are done is a good idea. The higher the goal, the easier it will be to get discouraged. Keep it simple. I'm going with a basic powerplant, a little chrome on the engine. I can always get fancier after she's done. I plan on doing my own interior and maybe the paint too. But above all, plan, plan and do research and ask questions! That's the one thing Brian at Total told me. If you ever have a doubt about what you are doing, call them and ask. There's no such thing as a stupid question! Heck, I believe they would try to help you no matter who you got your kit from.
Good luck!