I agree. Your QSC K10s should handle the Axe just fine. Might use the output EQ to tweak the overall output, but just remember that the output EQ affects everything going through that output and isn't tied to any preset. You could also use room correction software, but that's probably overkill in your situation and more applicable to studio playback or audiophile.
Also (and you may already be aware of this), about output EQ, keep in mind that any presets you edit and save will likely be somewhat influenced by the output EQ and may not translate as well to other systems (other PAs, headphones, you said you haven't done any recording, yet, but it would affect that, too. IME, output EQ is a good place to make little tweaks based on the sound of the system you're playing through and the environment you're in. I usually play some well-known-to-me recordings through it, set it that way, and try not to make many/any edits other than just experimenting. You'll find more in the manual about this, too, if you haven't already seen it.