A combo would certainly be easier, but if you like the Harke and Ampeg, that will work just fine. Don't get overly worked up on wattage specs, for amps OR cabs. They don't tell the whole story. Yes, ANY amp is capable of blowing ANY cab, including combo amps. Many youngsters think just because they're built as one unit, you should be able to dime every control, and the spkr should take it. Not true. Just use your ears. If a spkr gets farty, distorted, you're pushing it too hard. Back off the low eq and/or volume. Good luck.