Double your estimate of how much gear you plan to take if this is your first RV. The average RVer that has scaled weights adds over 1000 poudns of stuff. Families add more than average. Full timers add more. Couples add less.
So, let's say you start at a conservative 6000 pounds dry. That will be over 7000 pounds loaded with 900-1000 pounds of trailer tongue weights. Your receiver has a 1000 pound limit when using a weight distributing hitch, so that puts you at one limit at 7k loaded.
Another typical limit is vehicle. That needs to support the people, the cargo inside, all the entertainment while traveling, and trailer TW. If you start at 1500 pounds, family weights 500, extra cargo, dog, etc weigh 200, you only have 800 left for loaded trailer tongue weight. So take a look at your driver's door for your vehicle's as equipped payload and use your own estimates.
Also, please confirm you have the equipment for that 8200 pound tow rating. GM sells a lot of SUVs without it. You can confirm by looking at the list of RPO codes on a sticker in your glove box. You want too make sure it has GU6 and Z82.