I don't think there's such a thing as too much unless your family takes issue with it. I used to BBQ/grill 7 days a week, but then my family got 'smoked out' for lack of a better term, and for the past year, year and a half I've cut it down to about once or twice a week for main meals.
That said I still do smoke my meat bones whenever I'm making them into a stock, and I grill a lot of veggies regardless of if I'm oven baking or sauteing the main dish.
Just be forewarned though, my family LOVED everything on the smoker or off the grill for about two years.. and then they all pulled a mutiny and told me to cut it back. Waaaaay back, because they were sick of it all.
The Life of the Knife is Ended By! The Wife.