I'm building a 5x10 offroad trailer that will haul my 4 wheeler. The front will have a 36x48x60 box. This box will have an arb fridge, partner stove, all my electronics and storage. There will also be a tongue box that will house my batteries. This will be a tandem axle build with either 31" or 33" tires. It will have a roof rack and a rack for a kayak. Attached is my rough design. There will be a fold out sink on one side and my 10 gallon propane tank on the other side just behind the box. I will also mount an instance water heater on the road side of the box inside a separate enclosure. I'm looking for help trying to figure out how far back my axles should be placed. Thanks in advance.