RE: shortening vanes????
Right now, your FOC is running about 7%, well below anything I'd consider good for a hunting arrow. It's much more unstable than it needs to be. 2216's are a pretty heavy shaft, one of my favorites in fact, but the shaft weight means they do not match up well with light points and heavy fletching. 5" vanes are a LOT of weight on the tail end.
Here's what I'd recommend doing. Switch to a 125 gn point and 4" vanes to raise your FOC to about 10%. Doing that, you'll maintain almost the exact same total arrow weight. If you aren't totally addicted to vanes, think about switching to 100 gn tips and 4" feathers to improve FOC even more AND lighten your arrows for better speed and trajectory.