The cube 60 can have a 60w 8 ohm cab but I don't know any cabs that are like that? Are there many that are pretty common to find in most music stores?
My Gear:
Epiphone Les Paul Standard
Peavey Vypyr 30
DW Collector's 3 pc drums
Mapex Black panther snare
Sabian AAX/Zildjian K cymbals.
Having a 100W or 150W cab is perfectly fine, it just has to be over 60.
I think 16 ohm cabs are more common than 8, but you should still be able to find something.