Why cut the leg off at the knee if you are going to debone it anyway? I do it all right there at the kill site.
I start along the scapular ridge and go around both sides from there. I end up with it all in one piece that makes it easier to me to keep up with instead of cutting it into smaller pieces. I do end up with loose meat down below the shoulder joint that I just throw in the bag though.
Doing it in separate pieces like that is interesting though. Depending on how you were packing it out it might make weight distribution easier.