Mark,
You will enjoy working with Fran as he is a stellar guy. don't put your build off too long for Life will come along and get in the way. I know from first hand experience. My build is goin on 7+ years thanks to teenagers who destroyed my budget more than once. Had enough to actually build the entire car when I started. My build log is an interesting story in itself.
http://http://www.gt40s.com/forum/gt40-build-logs/13742-drb-5-a.html
My suggestion is to get the basic car when you can and build it as you go, adding funds as you can. You will be surprised at what will come along or happen as you build it. You will take detours along the way due to oportunities, and Life interjecting its way also.
Frran came to my rescue uninvited to help out with my disc brakes and hubs for my C-4 uprights. He is that kind of guy. If your spouse is ageeable, get what you can, when you can, even if it is just parts here and there. If you decide later you don't want to use them you can always sell them here or on ebay. The build is where the fun is. You can't put a price tag on your labor. Your abilities will grow as you and the car progress.
Bill