If you're looking for simplicity, Wendt X5's are still out there.
For power go with IDX NP batts. One to power your mixer, one to power your receivers. Very light and should easily last you a day of the work you're describing, and durable enough to stand up to the beating they'll inevitably take in the van bouncing between location shoots.
I also agree with ditching the quadpack, just because I'm in favor of giving myself the lightest rig possible.