of course the hardes part is to try to think where to start!! - what are your preferred plan of attack for doing a full restoration?
First before you do one more thing on your car, you need to sit down and do a long thinking on this project.
How much can you really dedicate of your annual income on a consistent basis?
Keep in mind financial emergencies will happen sooner or later. (Not to mention your wife/ G/F, family will have needs to be met.) So what you think and what will be, will no doubt change every year in and year out.
How much work do you plan to do on your own? We're talkin hours per week you can hopefully; consistenly dedicate. Seasons where you live (weather) take some part of the year away. Too hot or too cold parts of the year. Me? I hit it hard on my car in Fall and Early Spring just for that reason. Would be nice to own a giant A/C heated shop!
Are you willing to teach yourself certain skills: Mig Welding, bodywork, fabricating, polishing, buffing, re-plating, for example. Go on You Tube and join forums that specialize in whatever it is you want to learn if you plan to Do It Yourself!
Can you estimate how much of the main parts you'll need to get it on all fours and painted? An Excel spread sheet is a good way to keep track for your resto and I recommend this. One for parts, budget, needs.
Once you do make the commitment to do a full rotisserie restoration, you will need to take tons of photos of how everything was before you took it off and notes. Then bag it! Burn it to a disc. You don't want to loose these in the future because your computer decided to crap out on you.
Next, Start researching parts companies. In Parts wanted section here, there is a huge list of vendors. Start looking at them all.
Lastly, you'll need to get a nut and bolt book for references. The one you need:
http://amkproducts.com/Catalog_PDF.htmand
http://www.mmcdetroit.com/Market_Place/