This is a huge project. The “guy” has a ton of hours into this. But bit off more than he could chew.
i dont know if there would be a systematic approach to this, but strength in the framework would be job 1. I would plan on lots of bolt in stiffeners,and fitting the 1 piece flip front end.
when i build/fab anything i like to take the time to make things serviceable.
watching videos,or shows with custom builds, i wonder how some even check the oil.
even the simplest things, like a repower, i have installed/removed engines 4 times. This applies to almost every aspect.