Sounds like you're set then. The reason I mention the BMK is that the metering in the Magnums is notoriously inaccurate to the tune of ~+-25% on DC charge and draw. The volt meter is better but nowhere close to the gear you already have. Magnum defends this saying that they would rather put the money into the robustness of the unit rather than bells and whistles when the BMK is redundant. While a Trimetric is a fancier device, my solar is all stand-alone monitored, and the BMK is dead-nuts on for DC I/O on the batteries to the point I can't justify really anything more. Just FYI if you are in any way planning on the ME-ARC as a reference.