For the Solar, I'm *very likely* going to use Zamp, which is what GoWesty resells. They are glass panels and kitted with an all-weather charge controller that is external to the van. That's why I can get away with just the connector on the van - everything else is externalized and portable. Not cheap though. I don't have to use Zamp, so I'll keep looking.
For battery management, I am going with the advice of EVTV, who says you don't really need one, and their applications (driving motors for cars) are much more strenuous than mine. having said that, I suspect that if you go to parallel strings (which I would have to if I wanted more than 180 amp-hours), I think it is more complicated to get all of the juice in and out of the battery bank. With my four-cell series setup, it is much more simple