It's hard to finish one project when you mind is on another. I can't remember where you were on the Dodge, but if it's a roller they sure sell easier. If you can get it sold and come out alright on time and money, go for it. Your '55 is probably much closer to driving, and in all honesty you would probably get more enjoyment out of it.
There are a lot of deep projects out there on the cheap. People like us don't mind diving into where most will shy away from. Too bad you can't keep them all, but money and storage is usually short.
My buddy still has his '24 Dodge coupe and an extra coupe body I give him. He is years away from doing anything with them. Just thinking if you wanted a big project Dodge later, probably be real reasonable