One power supply, two loads, fuses and current sense
Do you need remote sense? You could use large cables to connect your 5V, then jumper the remote sense to output of the supply before the fuse.  In this way, your voltage drop would be minimized, and no need for remote sense.

Also, you could put the remote sense before the fuse, and keep the lines very short post-fuse to the load.

Do you need a fuse?  Your supply can only put out 90A, and your loads each pull 40.