Finish & run the '64's new motor. Plow snow. Finish its new 727. Plow snow. Swap into the car. Plow snow. Find a Dana for it or build the best 8.75 I can. Plow snow. Do the 3" exhaust. Plow snow. Get some 9x28 slicks for it. Plow snow. Sell the '63. Plow snow.
Time & weather allowing, get more done on Missile VII and another project. After all that, maybe get a real job again.