'64 Cuda 225 Pushbutton Fix or Sell?

I have had my '64 Cuda either on the road (last time in late 99) or in my driveway collecting rust since I bought it at age 16.
It was my second car. The first was a $50 '63 Valiant Signet 2 door hd top which I swapped engine and interior from a $35 four door. I had a friends Uncle paint it for beer money, and sold it to a kid at school for $650. Which I used to buy the Cuda.

I took the Cuda to high school shop class and rebuilt the 225 with new 0.40 over pistons and shaved the head in metal shop 90 thou.

To make long story short I never have had the time/money and ( 4 kids/house/work) later, and my poor old car has spent some time outside in the weather for now on 32 years.

I have come to a point where I need to make a decision.
Invest a fairly huge chunk of money into getting it back to a road worthy ride.

Or my neighbor is pleading with me to not let it rot anymore and sell it to him.
He will put a big block and tub it most likely, as he would like to see it on the track.
2 days ago he he texted me with a $500 offer. He didn't want to insult me as he knows how much sentimental value I have for it. But realistically he is going to gut it for a street rod.

I recently moved positions in my company and work closer to home in a building that is empty 10 months a year, I am optimistic that I can take it there to work on under cover( my house has no garage). I feel if I keep it at least a rolling chassi I can push/drive it out when we need to run the plant.

I have found a couple of places on the web that sell body panels/floor pans.
I assume all 4 floors and the front/rear quarters sections.
Priced them out to $2000 or so plus shipping/tax/ exchange.
I figure closer to $4500 Canadian just for sheet metal.

What would be your recommendation" keep or sell"?

And if I keep can I get some assistance sourcing parts?
Am I letting emotional attachment get the better of me?

I spent some time last week cleaning the plugs/points and installed a new stock coil, in an effort to get it to start.
Last time I had it running would have been 5-6 years ago.
Once I cleaned the gunk out of the carb it fired right up. Good old "slant 6 's"
I topped up the tranny fluid and once it warmed up it now rolls under its own power.
AMAZiNG.
Almost Christine like.
And like that kid I the movie I fell in love again.