Looks like you're doing it right. It took me 14 years to complete my #s '70 Challenger R/T vert. I purchased in '93 and got it finally finished for the'08 Nationals.
It's time and money, for me working side jobs while trying balancing work with family. I sold it in '12 when economy took it's toll and I cashed in the bank account
for more important needs. I got back in the market last year with a "71 Charger R/T this time. my retirement present. Kept the 440 with a slight mod build, then
added a 5 Spd. tremec, 4 wh discs and 17" Americans. My grandson calls it Grandpas Noisy Car, but it's a blast.
My youngest son just bought a clean '74 Cuda that I found down here in Florida. It's a good start for rebuild, his plans are to install a Gen 3 5.7, tremec 5 spd.,
Hotchkis suspension. He has me to do the work but funds will take him awhile and Dad won't help on that end. If he wants I'll start puling it apart later this winter,
the original Powder Blue has got to go.
We'll follow your thread and wish you good luck with your build. During my Chally project I continued to keep interest by going to shows knowing one day I'd get it done.