Don't worry about the camera. The lens isn't that heavy that it will put any undue mechanical stress on the camera, unless you happens to drop them on the ground.
When walking around, it works well to have the camera hang from your shoulder.
When taking pictures, you would take most of the weight with your left hand below the lens - not because of mechanical stress on the camera, but because you get less camera shake when taking the center of gravity into account.
The only time weight will matter is that when you use a tripod, you should use the collar instead of mounting the camera body to the tripod. The tripod hole in the bottom of the camera body isn't intended for use with lenses reaching out a long way infront of the camera. And most tripod heads will sag significantly because of the bad placement of the center of gravity.
Enjoy the lens, and don't spend any time worrying.