Typically I have about 19 burner inserters:
6 coal, 9 iron, 2 copper, 2 stone

They are exclusively in direct-feed configurations (that is burner miners on iron/copper feed directly into a stone furnace, on coal they feed into each other, on stone into a chest), I do not use burner inserters or ...

I think I'd like to try rushing out into electricity as fast as possible.... I hate ferrying coal around everywhere at the start of the game....... I just hate being short on supplies at the start too haha

I've just gotten into this game and I love how many different ways it can be played. It is so open ended. I was curious how long you guys stay on the starting "burner phase" though? I usually work up to about 8 burner miners and furnaces for iron, 2 miners for copper, 2 for stone, and 8 for coal ...