Why do you want to wait for ACL reconstruction.
As there is a indentation fracture, that can be addressed during arthroscopy itself. Else a regular ACL reconstruction would not hinder lateral femoral indentation fracture at all.
You can save time by getting ACL right now. And take rest post arthroscopy.
Health Tips
You can do non weight bearing knee bending. It is allowed post 2 weeks in a subchondral fracture.