Welcome to the forums, there is an abundance of good information available, from very experienced RV'rs. Take heed to the comments you hear in regards to the questions you ask. Remember, the info you get may be different than what you are wanting to hear. Most people who post this question are hoping to hear "great set-up, you'll be just fine", when in reality, the trailer industry is pushing very heavy and long trailers under the catch phrase "1/2 ton towable's". There is much more to it that 1/2 ton towable.
1. Are you new to towing? This trailer is long and your wheelbase is short, assuming the Yukon is not an XL, the recommended wheelbase to trailer length posted in several other posts states your vehicle with 116" wheelbase is matched up to max length of 22' trailers. If you are not used to towing, there will be a huge culture shock when you encounter side winds and the turbulance created by semi trucks. Other issues include breaking and stopping distances, the distance between your TV rear axle and your TT axles also play an issue in what your tow vehicle will do when you have to swerve or stop suddenly. The longer wheelbase on your TV and the shorter span from your rear axle to the trailer axle, the better.
2. Your stated weights are probably ok, considering they are realistic, although it is a big load for the 5.3 engine. Again, more culture shock if not used to towing. At least your tow vehicle and the trailer are similar in overall weight, again very important that you have selected the WD hitch.
3. Expect any grades will increase the work load on the truck, don't be surprised when the tachometer is nearing 4500 rpm to maintiain 65 MPH,
4. Sounds that you have made the purchase and have committed yourself to the setup. Maybe the future will have a new tow vehicle in store for you, make sure the next vehicle is not driven by "getting by", rather by having enough muscle and stature to pull with ease.
By the way, love the Calgary area, hope to get up to several of the lakes near you sometime in my lifetime.