Hi,
Seems like there are not "phisical rules" regarding feeting crack legnth by inseam length.
***The are tables that set's the legnth by your inseam length.

Right now I using 175mm crank and I'm 1.59m'.
And it nothing wront with it at the spectrum of comfy of cycling.

Anyhow, this is the direction for the "package":
- Crank: Litepro 170mm Square BCD 130mm
- Chainring: 60T