HI. Good to know its finally running and making you happy.
About the antifreeze, I had a simular problem on my E12 Columbus. when running cold no leak, but after while i notice antifreeze on my rear bumper right side and looking in the engine room there was also antifreeze on the right side. Found that a water hose running on the right frame and under the body up to radiator Cap pipe in right door frame, war cracked under the body. had to take the right panel of to get to it and put in a new one. Also there was a crack in the hose for the Reservior (behind the right wheel) so i decited to replace all the coolant hoses in engine room. I am planning on changing the hoses in front also, for the heater and radiator. Got bit of a hearattack when i test drived after the hose change, got a hole lot of coolant leak from the rear, but that was my fault, i over filled the coolin system . About the starter, i have fixed many starters at my work at the autogarage and usually 99% if the starter works when you tap it, the coals (we kall it kol) are either to short og get stuck in old oil and dirt. If the coal don´t connect to stator the pull solinoid does not get ground, You could also hear a low clicking But to be sure check all componments.
Hope all go well
Greetings from Iceland
Sig K Krist