Good point!

Unless you get super crazy with big loads, i.e. hot tub, BIG electric motor/s (>3h.p.), resistance loads (electric heat), a 60 amp. sub-panel will be large enough (guessing your load to be ~9kW max.) Add surge suppression to your low voltage cables (phone, video, etc.) where they enter the Garage (buried conduit from house?) Lightning seeks the smallest wires first.