Project Squirrel

[Outlaw]

Okay, I'm back with more questions... good lord, I need to get my act together.

So the first reduction chain would have a 6mm pitch to it leading between both the motor and the sprocket it's going to. This being the starting sprocket on the motor: https://www.ebay.co.uk/itm/174202985284

Question is would it be alright for me to swap over to a different size chain pitch and different sprocket to act as the start of the second reduction?

I'm sorry if the question's confusing, just trying to sort things out measurement wise.