I watched your video. You look comfortable while running and efficient while planting, so really I wouldn't worry about the drop and the level unless you feel that your getting pulled forward or pushed back during your run/plant. The question I had was what was the lenght of the pole?
One tip: Something I always did a lot of was plant drills and pole runs (when my legs worked...), but instead of using the poles I would jump on, I'd find the bigest, heaviest, most rediculas thing I could. For instance at camps I could usually find an old black cat or fibersport or old carbons in the 16+/180+ range, hold these out as far as I could, and do plant drills all day. That will really expose the part of your run and plant thats inefficient, and when you switch back down, the smaller poles will seem like nothing and you'll be that much improved. When I coached, I found kids had a real hard time with planting and running with 12,13,14' poles, mostly because their too light(small poles float while you run, big ones almost plant themselves), so I made them drill with 15's and 16's and it really helped their comfort level and technique.