Can I cross the output inductor trace with input power line?
You have mis-drawn the ORANGE loop. 

D1 is providing a free-wheel path when the SW pin goes OPEN.

L1 will want to maintain its current flow so the current will commutate from the FET/BJT at the SW pin to  L1.

This current will then flow down R1 -> LED -> LED to maintain the current flow of L1.

Should you cross the tracks involving the regulation inductor? no. This is a very noise loop and if you are not careful you will cause coupling