I wouldn't worry an awful lot about the power, I've not had mine long, and like you was a little concerned about power as I was going to be using it into an 8ohm 1x15 (first generation Barefaced Compact), so on paper that's only 88.5 watts into just one driver, albiet quite a sensitive one.
However, not an issue, I did three gigs over Christmas with that set-up and I don't think I had the master above 11 o'clock in a four piece rock/pop covers/function band.
I've now swapped to a EBS Neo 2x12 and am looking forward to using it in anger for the first time