Opinions and thoughts wanted!

I'm in the process of getting a '74 Dart donor inner front clip to put into my '69 Cuda. It needs driver side frame rail, torsion/trans cross member, inner fenders.. so I'm doing that as a unit.
I'm thinking a little ahead.. what do I want this car to be?
I've never had the Cuda running. My brother had it started once, and told me it was a pretty lopey cam in it.. has a high rise manifold, headers. 727 trans with a 8 3/4 rear, don't know if it's sure grip, or what the gears are.
I have the drive train from the Dart. 318, 904, 8 1/4 rear with 3.23? gears. Drove it home 180 miles, engine ran ok, but burned oil, and seemed a little tired. 160,000 miles, not sure if any rebuilds on anything.
I also have a '76 360 and 727 from a motor home sitting here, with 60,000 original miles, and a receipt from a $1200 trans rebuild 2000 miles from the odometer. I know the tail stocks are different. I drove this combo in the motor home, and it ran pretty good.
My dilemma right now.. do I want to build this car to be a snorty street fighter with the small block that's in it, keep the 727 and 8 3/4.. manual steering/brakes that it has now, painted floor with floor mats, AM radio... etc. Replace the axles in the rear so I have big bolt pattern all the way around.
OR.. do I build it as a nice car to drive.. power steering and brakes from the Dart, 360 from the motor home, 8 1/4 rear (open) from the Dart. Hook up the A/C from the Dart (Cuda is an A/C car, and I have a source to fill the orig A/C), dynamat to make it quiet, carpet, nice stereo.. just make a nice driving car.
As a side note, I'm thinking about letting the 16 yr. old drive it to prom.. and maybe the wife might drive it home from a show (if I ever go to one, not much for shows) if I decide to have a beer or 10..
On one hand, I'd like it if she likes riding in or driving the car.. on the other hand, I'd like it if she didn't like riding in or driving the car...
Thoughts anyone?