You can start it on the ground with a trans on it. It won't tip over. No need to sit on it and burn your boots, or worse. Put a block of wood under each side engine mount
You will need a radiator so you can run. It and break in the camshaft.
All this talk of making something to start it from the front, you will waste a lot of time and maybe end up in the ER. Just bolt an automatic trans to it and loop the cooler lines to each other.