Hi there "homeless-d" and congratulations on your new home purchase. My wife and I recently went through the same things you are doing...sorting, throwing, sorting, and throwing again. We still have a huge yard sale planned to liquidate our remaining "stuff". We will keep our storage unit to hold on to heirlooms and things we just can't part with, but for the most part we have been surprised how easy it is to let go of all the stuff. It's kind of liberating. Sometimes you will be sad when you think about all the things you are getting rid of but in the end, if you are like my wife and I, you will feel free in a sense.
One practical note of caution, make sure that when you decide what you are going to keep in your Cambria to go to a truck stop or other public weigh scale and make sure you have not overloaded your rig. I read on some blog that most RVs you see on the road are overloaded which can lead to dangerous stopping situations and tire failure.
Try to enjoy your "purge" and it'll pay off.