Propane pressure help

I'm getting into the plumbing (propane, water and waste) phase of my build and I'd like to make sure I've got my propane thinking right.
I am planning on a single 20 lb tank on the tongue feeding into a flexible hose leading to 3/8" iron piping that will run under the frame. It will feed two appliances. The first is a Olympian Wave 3 Heater located near the tongue. The second is my Coleman Two Burner stove located in the rear galley.
Since I have seen Coleman High Pressure hoses attached directly to their stoves without an in-line regulator, I am going to assume that the regulator is built into the stove. Am I correct?
The heater runs at 11" WC and although I can put a low pressure regulator in the branch line feeding the heater, it doesn't seem like a good idea to run the iron pipe at tank pressure all the way to the rear for the stove.
To add to my confusion, I thought I've been told that the best way to run propane was to put a regulator at the tank, but... since the heater up front needs low pressure and the stove in the rear uses high pressure????
I am confused
What part (if not all) of my thinking is misguided. Which regulators need to be where? Do I need multiple regulators? What? Huh? HELP!!!
I am planning on a single 20 lb tank on the tongue feeding into a flexible hose leading to 3/8" iron piping that will run under the frame. It will feed two appliances. The first is a Olympian Wave 3 Heater located near the tongue. The second is my Coleman Two Burner stove located in the rear galley.
Since I have seen Coleman High Pressure hoses attached directly to their stoves without an in-line regulator, I am going to assume that the regulator is built into the stove. Am I correct?
The heater runs at 11" WC and although I can put a low pressure regulator in the branch line feeding the heater, it doesn't seem like a good idea to run the iron pipe at tank pressure all the way to the rear for the stove.
To add to my confusion, I thought I've been told that the best way to run propane was to put a regulator at the tank, but... since the heater up front needs low pressure and the stove in the rear uses high pressure????
I am confused


