As my old Grandmother used to say "there's more than one way to skin a cat my boy" and so it is with restoration, the basic principal is always the same however you choose to achieve it, starting with a pile of rust and decay and ending with something that matches the owners expectations in terms of accuracy and finish is the key.
I've seen a number of different approaches used by people to achieve this, some good, some not so good and some doomed to failure and disillusionment from the start. Iv'e also tried a few variations of the basic principal myself which prompted me to ask the question of you.
After restoring a number of my own and other peoples vehicles over the years I've come to the conclusion that there is no definitive way to carry out the work but have developed a methodology that suits my particular skill sets and resources. As you rightly note above it's dependent on a range of factors not least availability of space, tooling, availability of spares and most importantly cash flow to fund the project.
I take it this is your first large vehicle project?.
For what it's worth this is my approach, the key for me is a clear vision of the end state ( and you appear to be very clear on that point) and a fixed plan of how to achieve it. I break the overall restoration down into sub tasks so that as each task is completed it can be added to the previous assemblies to work towards the completed whole My starting point after an initial assessment is to break down into component parts the vehicle all the while taking 100's of photos.
Then starting with the frame it's cleaned repaired and painted then sub assemblies follow on overhauled and painted as required they are then bolted onto the frame as finished units. I tend to work along the the route of axles, hubs, brakes,drive train, gear box, engine then body work and fitting out then a last top coat of paint over everything and then wiring and markings to finish off.
For me this approach maintains focus of effort and funding while producing visible progress of the project. Restoration is undeniably challenging for all of us in terms of time and cost and not forgetting the all important factor of onward motivation, sadly I have taken on several projects over the years where one or a combination of these factors have defeated the previous owners.
Iv'e just reread this and it sounds like I'm a classic old fart preaching away, I do hope you don't take it as such it is not meant to be in any shape or form, as I mentioned in a previous post I admire your attention to detail and those of us who are the 'Old Farts' of the movement ( and there is a disproportionate number of us) should do everything in our power to encourage younger chaps like yourself to take on these projects so I wish you the very best keep posting the up dates and photos
Regards
Pete