You're so cool. I swing both ways.
Since you said it is your only vehicle and it is still driving, I would avoid pulling the motor twice. If your motor is okay, then you can just slap a bunch of new gaskets on it and drive it another 100k. If its in poor health, you can pull it out and rebuild it pretty cheaply so long as you can get away with avoiding machine work ($$$). Or you can get a used engine and rebuild it on a stand while you squeeze the last few miles out of your current engine.