Take it from an X heavy truck mechanic. You’re on the right track but you don't need the heavy weight of the pipe. You can use plastic line for everything after the tank.
I would run one line to a manifold if you want one and then to a tank. I would then run most of the lines off the tank.
You also could, if you wanted to spend the money, feed the tank with steel breaded line. This is basically how 99% of the Semi-trucks are setup. The steel breaded line is really due to the heat.
Just thinking about weight and complexity. Also Just My Opinion