Looks like you have the info above, many of us have done this. I just want to add that the QD outlet on your trailer might be a hard to find ($$) prepietory fitting. Just remove it and get a common QD setup from Home depot or your propane dealer. My Jayco had an odd ball fitting that I replaced.
The removal of the regulator is very easy. I also bought a regulator for a 20 lb tank, put a QD on it for times I'm not taking the trailer. I also tapped into my house propane and put an outlet behind the house and use it while I'm home.