I think I have too much car here for me. I had to have a GN but I'm lost. I mean really lost.
It sounds to me like your car chose the right owner.
If you think your car is too much, then it's just right. Lol
Sadly, your local (non Turbo Regal) mechanic knows less than you do and probably won't take the time to read this site.
Add your location to your profile so guys know where you're from or post for help in your area of the regional section towards the bottom of the site.
Just start by searching spring cleaning and go from there.
Learning the Scanmaster would be next and as mentioned before, keep the alky tank full.
As long as you don't get any knock retard (KR) on the Scanmaster you should be ok. You don't have to run it wide open all the time.
Just drive/ cruise it and have fun while learning.
I hope your second hobby is reading.
Search for tps setting, iac settings and for alky pump maintenance.
Post any questions and we'll help as much as we can. The trouble is, at this point you won't know what to ask. That's ok as we've all been right where you're at.
I have faith in you. I have a feeling the car will be well cared for.
Cheers,
George