Very hard to understand the circuit, because it isn't clear but - if you don't want to use a dedicated current sense IC, why not put the
current sense resistor in the -ve line, then make the junction P/S x Resistor the 0V for both meters, while the other side of the resistor
becomes 0V for the equipment. There'll be a very small error in the voltage meter (0.1V max?), but it will simplify wiring.