Just a brief update on this thread after completing the installation. I did use the Renogy panels as the narrow width allowed installation alongside the a/c units without getting too close to a shadow. All in series just because it was easier to plug and play that way. #6 factory prewire down to the Renogy Rover 40 in the basement. I installed a switch on the down leads so I can isolate the panels from the controller.
So far I like the Rover 40, but no real chance to determine system performance until we leave home and put it to the test. The terminals will accept a number 6 wire, although the documentation says #10. I got the optional bluetooth module so that makes monitoring and adjustments easy to do with a phone. One feature I'm missing from prior experience with a Midnite controller is the ability to engage equalization with a button push. Seems like the Renogy is just time/calendar based. I've used EQ in the past to top charge the Lifelines when I had the time to sit and monitor the charge current. Looks the the process with the Rover will be slightly more involved, but I can just go in with the phone and up the float voltage to accomplish a top charge if no easier method is found.
As I sit here thinking about it, in the time it took me to step outside, open the basement, and push buttons on the Midnite I can make a voltage change from the recliner, so what am I whining about? :)