When the time comes (probably not for a while), I was considering a package with the 50DN+, Wakespeed regulator, custom made batteries with Batrium BMS, and Victron Quattro. I was probably going to have the Batrium be the point of control (at least for battery charging if that's possible. However, I bet there's many ways to make this all play nicely together.
I had two Heart 2800's in my Bus, pulled them out and installed two Multiplus Inverters.