Should I keep my 65 Valiant or my 73 Charger?

I've gotten too many Mopars to fund and repair. I've got this 1965 Valiant 4 Door Sedan, 1973 Dodge Charger, 1986 Plymouth Reliant and 1999 Dodge Dakota R/T. Ultimately my goal is to be able to drive my 65 Valiant or 73 Charger to my local car shows and not have to worry about a breakdown no matter which car I choose. The Valiant needs a fair amount of rust repair, lower rear quarters, small patch on passenger door, 3 out of 4 floor pans, and a replacement driver's fender. I would also like to get a 225 engine back in as someone swapped it for a 1966 170. It could also use a transmission leak repair and a front end rebuild. The 73 Charger originally was a 318 but I got it with a 1976 400-4bbl, 727, 8.75 3.91 limited slip. I've rebuilt the front end, interior, rebuilt transmission, rebuilt 400, new engine harness, new rear suspension, brakes. It needs mostly paint now. But I'm unable to document it because there was no broadcast sheet. The 65 Valiant I've redone most the interior, replaced dash and engine harness, rebuilt gauges, new fuel system front to back, rebuilt brake system front to back, and got the engine running ok. However, I was able to get the original build card from Chrysler and have been able to document it back to it's original selling dealer. The Charger has driveability problems ranging from running hot sometimes, cutting off, and a driveline vibration. The Valiant has a tremendous transmission leak from the rear park cover, needs a front end rebuild, and the correct engine put in. Realistically what would be more desirable of a car going by originality. a 1965 Valiant 200 4 Door Sedan with 225 and Torqueflite column shift, or a 1973 Dodge Charger 318, Torqueflite 904 column shift. How expensive can it get to have the floor pans replaced on a Valiant? I already have the fronts in the box.