Help Requested. Is this repairable? Options

[CamWilson]

Long story short, the deeper I get into this car, the more rust I find and I'm not sure how to proceed.

At this point, on the passenger side I have the following parts that are in need of repair

Inner long and outer long underneath the door sill
Outer layer of long in the engine bay
Inner layer of long in the engine bay
Outer layer of long in fender well
Inner layer of long in fender well
Entire outer firewall
Bottom few inches of inner firewall
4 cyl motor mount
floors

(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-22702-1546813911.1.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-22702-1546813911.2.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-22702-1546813911.3.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-22702-1546813911.4.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-22702-1546813911.5.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-22702-1546813911.6.jpg)

I know that anything can be repaired with enough time and $$, but what are the chances that a hobbyist such as myself call pull this off in any respectable way?

I've built extremely stout door braces, but I'm very wary about how much metal I can take off this thing without it twisting and deforming seriously enough to effect future driving enjoyment.

Part 2 of the question.

Say I decide to jump into it. In what order should I tackle the long repairs and what additional bracing should I build in?

Thanks in advance guys, I'd be completely stuck without your input here.