I responded to your other post asking for help, but I see here that you have been at this for a while.
I have seen two different approaches to the "full blown restoration". One is to tackle the different areas one by one. Restore the mechanicals, then clean and repaint the engine bay, then do the exterior, and then the interior, or some variation on that sequence. There are several threads by folks who have done this to greater or lesser extents.
@rsporsche is nearing the end of his journey along this path, and he has the same car as you, so I'd definitely check out his thread. The other is to dive in and disassemble the car, and do all of it at once. That choice depends a lot on the work needed, your budget, your work space, and how confident you are in taking that scale of project to completion.
IMO if you have any doubts about any of these factors, then do it step by step as much as practical. Otherwise you can get stalled and end up with an incomplete basket case.
In my case, I have had my car for 20 years, mostly in storage as life and other exploits got in the way.. I have been collecting parts for years, and that has eased the financial strain a bit, but I am now deep in the throes of a full-scale empty-shell restoration. I'm pretty sure that when I am done the car will be basically brand new...Not concours, by any means but clean and reliable, and customized somewhat to my likes and dislikes.
Good Luck!!
Scott