I would make sure I had a rear anti-sway bar. As the name implies, it reduces sway. The larger the bar diameter, the less sway. I am not understanding "... will it lean left when loaded ...".
I am an airbag fan. However, I am not sure I would be overly concerned with picking up your TC without them. Worst case, is your headlights will aim a little high,. and if excessive a screwdriver will take care of that. Then when you get home you can decide if you want bags.
I will point out, the purpose of air bags is not to reduce sway, it is to lift the rear of the vehicle. They can help reduce sway, or if inflated improperly they can create sway.