Why finish it?

You will then need something else to work on and run out of room to park 2 vehicles. Ask me how I know. I envy the guys that are methodical and take their time doing these projects. I seem to rush them to be done then get bored and sell/trade them. hopefully with the 46 I have found one I will keep for a long time.
I found a rear crossmember and trailing arm set up from a 64 that was blasted and painted for the same price as a 4 link kit (no coil overs) so price seems to be the same. Which set up will tow and drive better? The more I read about setting up roll center etc on 4 link, it seems the trailing arms would be the better way to go, but the external frame parallel 4 link seems to drop it all the way down? Am I missing something?