By volume, I have two rear panniers and a handlebar bag. The sleeping pad, tent and a small bag with rainwear and a couple of spare tubes are strapped on top of the rear rack. I'm not sure of the weight. For some non-camping tours, the load is down to the rear panniers, loosely packed.
On one tour, I used front panniers as well, but that was a much more isolated trip and I needed to have more food and more rough weather gear.
One thing I'll do is to go over my gear when I get home. If there was something I brought but didn't use, I'll think carefully about whether I need it for the next time. Some things, such as tools and rainwear, are essentials, but others can be left behind.