Thanks for all the input. For this gig, it makes logical sense to keep things as simple as possible. Also, I wasn't aware the filters in the X Air are different from the X32 (which I used for several years before my retirement). So I will use the DSP in the Peaveys (yes, both subs and tops have DSP so aux fed subs is still on the table.) As to focusing on mixing, there will actually be another friend (a relative newbie) primarily responsible for mixing with me more focused on system setup where his knowledge is weakest. Hopefully, before the next outing, we'll be able to set the rig up at a practice and give it a thorough going over.