Welcome to the forum. Where are you in Colorado?
That "winterizing" thread has a lot of good advice. When I re-winterized my trailer last March after towing it from the dealer in Chicago to Colorado, I used the air compressor method to blow out my lines after removing the water in the water filter and bypassing the HW heater. The blow out adapter for the city water connection is only a couple of dollars at Camping World. I used only a half-gallon of RV anti-freeze in the sink traps, gray tank, and black tank just to make sure that remaining water, if any, would not freeze.
When I started camping in early May, I had no leaks. But then we had a 90 degree day in April for the first time I can ever remember (and I have lived in Colorado for 50 years), so there weren't many really cold nights after I winterized.
With the intense sun we have here, you definitely need to get wheel covers for your tires.
New: 2016 Rockwood Signature Ultra Lite 8244WS 5th Wheel
2015 Ram 2500 CC-SB 6.7L Cummins turbodiesel 4x4
Sold: 2012 Rockwood Mini Lite 2109S