hallmark EXCmodel/ purchasing very basic camper suggestions

Why don't you just put on another water pump. Your Norhstar Laredo is a whole lot better than what you're looking at. The filter that's attached to my water pump crapped out on me and started spewing water everywhere while I was on my trip so I just replaced it and it works fine now. It makes no sense to replace what you have now with a cheap and basic Hallmark EXC.