I am not the weight police but you will want to know what the truck and camper weigh together and of course what your tow capacity is of your coach. With that said I think its a great idea! I see you have a Newmar 2903 and I can only guess your tow limit is 5000lbs as is mine. I talked to my dealer about pulling something heavier than my tow limit for my coach and they said that my chassis (Workhorse W24) for sure can handle the extra weight and they suggested I take my coach to a reputable fab shop and beef-up the hitch to take the extra weight so that is something you may want to consider as well. The hitch is really the weak point as it is usually only rated for 5000lbs for gassers (yours might be different).
Good luck and be sure to come back and share what you come up with!