When do you just say too much metal repair?

[Mgicm]

Hi
So I bought this 'rat rod' and just didnt like the way it was done. Pulled cab off and wow..the rot! There is so much to replace that I wonder if it makes sense to just get another cab. Problem is that Im going for the rat look so the black body has to match the bed/fenders etc. I just think i am not experienced enough to cut out and weld all the metal. It really needs an entire floor section with rockers, firewall, toeboard and kickpanels.

Have any been at this point? Maybe I should look on craigslist for a cab to try and match somehow that is not too bad and part this cab out? Looking for opinions. Would show some pics if any are interested.

thanks Kevin