My vote would be to keep it. My latest is my fourth car and the third had to go about 40 years ago for similar reasons to yours. I always regretted it and promised myself 'one day....'. For me that day has taken over 40 years to come around - if you have to leave it a year and can maybe go and visit it for 10 minutes or so occasionally that will be fine. It's an excellent looking build and if I hadn't already got a car built (and am preparing for a Midlana build as well) I would have snapped your car up in an instant.
let it sit a while - things will change sometime in the future
