I have to say that when I built my 71 hemicuda clone, my original plan was to completely restomod the car. I purposefully bought a 71 barracuda without a pedigree -- originally a 6-cylinder barracuda with no broadcast sheet or fender tags. I didn't want to feel guilty about making mods to the car, and I especially didn't want to modify a car that had any rarity.
You are obviously starting with a car that is more valuable than mine in its original state, but I wanted to let you know that the more I got into researching and restoring my car, the more of a purist I became. Originally, I was going to mini-tub the car, use a 6.1 HEMI, install coil-over suspension, etc. As I came to learn more and more about the Cuda, I changed my mind along the way about these kinds of modifications. My car would've been fine any way I built it, but I am certainly happiest with the route I took.
Everything on my car has maintained a more stock appearance. I have a lot of original and reproduction parts on the car, but everything is new or refurbished and configured to look more stock than restomod. For example, I decided to use a 472 HEMI crate motor in place of the 6.1 HEMI in order to keep the drivetrain more stock-looking -- yet it's all brand new and still gives me the reliability and power I was hoping for. I took the same approach with the interior: my radio is a reproduction that looks exactly like an original 71 Mopar radio but is all-new technology -- it looks original but I can plug-and-play my iPod tunes with it.
The only things from an outward appearance that makes my car not look stock is its lowered stance, the 18" wheels and the gloss (instead of flat black) billboards/shaker/tail panel/wing (the gloss black thing was my personal preference). So... my car still has the touch of restomod that I wanted, but it I didn't modify anything that couldn't easily be reverted to original again if I wanted to go that route. I'm really happy with this direction.