HMS Beagle, the primary reason I'm going with the mppt controller and wiring the panels in series is the solar pre wiring in the Lance is small, 10 or 12 gauge. I'll have to revisit my research but I was under the impression that while the mono panels are more efficient over all the poly were less affected by shade.
pianotuna. A switch is a good idea, I had the temp sensor in my head but didn't make it to the list, thanks for the reminder. One of the main reasons I am leaning towards the Blue Sky is the controller display shows most of the info I am looking for without having a separate display, I'll take a look at the Tristars again just to be sure.