Sigurdd50

I finally got a flip-flop hub wheel (2nd hand) and am ready to turn my '72 Bottecchia into a single speed/fixed gear.

this will be the first time for me (okay, well...I rode a Schwinn single speed when I was a kid)
the Nervar Chain ring up front is 40 tooth, and I'm going to go with it to keep the kit low $$ out put.

I am thinking of going with 16 tooth freewheel/15 tooth track cog

does this seem about right?

thanks for all help