Sounds great! For cleaning, is there anything I should do besides getting the grease off and out of the crannies?

What do you mean by "hyperglide" freewheel? I was thinking of replacing it with this one: https://www.amazon.com/gp/product/B0...KIKX0DER&psc=1

Also, would these pulley's work:
https://www.amazon.com/Shimano-Derai...illeur+pulleys

Looks they are compatible with my 1/2 x 3/32 inch chain and current 10 tooth (teeth??) pulleys.

Thanks !!