Thanks D. I went with Seymour Duncan Cool Rails neck and middle. And splurged on a JWP Godwood for the bridge.
Turns out the Godwood isn't a good fit sonically for this guitar, so I'll be swapping it out.
The Magica arrived a few days ago and the cab just got here today. The Achillies 2x12 has a Greenback on top and a Vintage 30 on the bottom. Tonally it's a perfect match. While I was waiting for the new 2x12 I tried the Magica through my 4x12 with the Redback/Creamback H75 x-pattern, and it just...
Agreed with all the comments above. The Redbacks are thick and mean. They bring a heavy controlled low end and mix well with most any bright speaker. I prefer an X-pattern in my 4x12.
X-pattern with Creamback 75s doing high gain: