You might also want to check the batteries you are using for your system. Due to the nature of the small space and high use, I remember from my armature radio l

You might also want to check the batteries you are using for your system. Due to the nature of the small space and high use, I remember from my armature radio license exam that some batteries vent gas when under operation. If I remember correctly, one such battery is NiMH. You should really read into your batteries and your charge controller specifications before doing anything like this. Other than that, this looks great!