What you're doing is the "normal" way it would be done. Capture all the mics at source and remix after the fact.
The issue you're coming up against is that the sound you get from your pa is NOT what your band actually sounds like. What your audience hears, and especially what you hear in your basement, is a mix of the pa and the direct sound from your amps and drums.

Capture can record the processed signal from each 16.4.2 channel, and/or it can record the stereo output that you send to the PA, but it won't sound like you're expecting. You just need to find time to mix your recordings, there's no way around it.

There are many ways to skin this cat, most of them are not quick especially if you want it to sound good.

But I have been working on my own method to make a quick and dirty CD for several years now and I have come up with a method that does work at least well enough to have a CD to listen to in the car and could even impress someone as the sound is decent, but obviously it is impossible to get a Studio Album sound from a live recording even with many hours spent doing a complete remix, it will still sound like a Live Album, which it is.

My favorite way to a quick a dirty CD is to open up your capture tracks in Capture. Set it up to play all mono tracks back through the mixer using Firewire. Be sure to mute any stereo tracks that were recorded toward the bottom of Cature, for instance I always record the Main L/R stereo track, but I typically don't use it (I do have another quick and dirty way to a CD using that track and adding in what is missing but that method doesn't work as well as what I am describing now). Let's assume the mixer is in the same state as it was when the recorded gig was over (otherwise you need to load a scene from the end of that gig so that the mixer is set up the same way it was for the show), be sure to save the scene the way you like the mixer live because you are about to make quite a few changes to the mixer (faders/eq/compression).

I will now play the capture tracks back through the mixer, but instead of using the PA speaker to hear the mixer, you will want to use either some Studio Monitors and/or Headphones. You can now start to remix the recording using the AI mixer, this should be much easier for you to do than using S1 because you are used to the mixer, you've been using it for a long time now, and you can get around on it much faster than S1, and that's OK, why not use it! So, hopefully you are getting the mix to sound decent on some Studio Monitors or Headphones, once iut sounds good and you're happy, set Capture up to record only the Main stereo mix from the mixer (all other record buttons should be disabled) hit record in capture and wait for the entire show to run through. The Mono tracks will be going into the mixer (Virtual Soundcheck method), the mixer will be set up to make a good mix for the headphones, and Capture will be recording Main mix into a single Stereo tacks. I typically just go make dinner and wait a couple hours for it to run throught the whole show, I'd call it a static mix with no automation, but hey we want quick and dirty here right?

When it's done, all that is left is Mastering and slitting up the songs into tracks, the project page in StudioOne Pro is perfect for this, I can make the mix loud with a little EQ if need and split the tracks up and order them all quite easily and quickly that way.

That's how I do it anyway, then I can hear the show in my car, which is all I'm really looking to do, Good Luck!

Steve

I would suggest getting yourself a little mobile recorder such as the zoom h4.
With carefull room placement you can capture the pa sound you love.
Such devices already have stereo mics inbuilt, and you can add your own, also provides phantom power if required. Added plus is you can add aditiomsl tracks from the mixer.
Easy and inexpensive, results are instant too.
Good luck with your venture.

Yes, you'll never get the acoustics right from your close mic'ed tracks unless you spend some time on mixing/mastering. Even if you set you mixer's channels to 'Post EQ & Dynamics' (to capture the FAT settings too) it still needs work.

If you like the sound in your basement then set up a stereo mic (or a pair of mics in say an XY config) and record it to a stereo track exactly as you hear it. Convert to mp3 and done.