I have a Pimento Red 73 model. Many years ago it was imported into Australia from East LA so it was nearly rust free.
It was an abandoned car so needed refurbishment . I saved these tasks for my retirement project. I have converted it to a UK-like car - RHD, *Lucas petrol injection, O/Drive gearbox with 3.45 diff ratio.
The downside is that I (like the car) have aged and the TR6 has a lower level of comfort than my 78 A/C 911. The Plus side is that parts are very cheap compared to the 911.
I have installed some Miata seats. This was only meant to be temporary fix to pass our Engineering standards for headrests, however I have grown to like them. I suggest you look out for a suitable set yourself.
All the mechanical parts are big heavy lumps of british iron so I hope your wife will assist you when you have to manoeuvre those big heavy engines & gboxes around. I really miss the strength I used to have in my youth!!!!
Hope you are successful & we can assist you with advice tips & traps.