Daily driving an A-body

I agree with most of what everyone is saying.

I wholeheartely agree on budgeting ahead of time, and revamp the fuel system, brakes, electrical.

I drove my 76 Dart Lite for 85% of daily driver duty for the last 2 years. Right out of the gate, all brakes, including hydraulics, shoes, springs, etc were replaced. Brakes have been bullet proof.
Fuel system was not addressed right out of the gate, and I regret it. Fuel pump died almost immediately, and the rest of the fuel system has nickeled and dimed me to death. You can fix it up front, or fix it along the way, but you will fix it.
Fluid maintenance is critical too. Differential fluid is one of the most neglected areas I have ever seen. My 3 speed manual had 5 ounces of fluid, but took 85 ounces to refill! I am amazed it is together. Wheel Bearings, alternator, voltage regulator, gauges, wiper cowl kit, heater hoses, etc.

If you are going to do it, I suggest taking a weekend, having some buddies over, and address all the key areas right out of the gate. Not only will you get to know the car, but you will also have intimate knowledge of the car, so hiccups down the road are far easier to trace.