My current idea is to get an ABUS 10KS sleeved chain, and the armored lock that goes with it 92W/65.

What length would you recommend for the chain, for use in a variety of circumstances?

I am estimating that a 5' chain would allow me to loop through both of the wheels and the frame, but it might be a bit heavier than I want to lug around. I think a 3' or 3.5' chain would get me one wheel and the frame.

What would you recommend?

PS, my commuter bikes are an older Fisher hybrid and a Volagi Viaje if that makes any difference.