I'll list them in no particular order,
1. Important to note that the Chinese missions to Okinawa, like the original 36 families, had a strong military presence as well. These are the guys who most likely had training in MA.
2. The "public" at large was not exposed to Chinese reading and writing and fashion, only the upper-class.
3. The masters such as Kusanku and Chinto did not teach "many" Okinawans - just a handful as teaching then was very selective.
4. They did not teach Kusanku kata and Chinto kata, named after themselves. They did teach the techniques and their students developed modified kata using those moves and named the kata after their teacher. That is most likely the way it went.
5. You mentioned "ki" in relation to the sternum. That's a new one on me. I have only seen/heard ki being centered in the lower belly,
tanden or
hara.
6. Loud kiai in every move? While a few schools may teach this way, I think this is more of a stereotype. Most schools kiai more judiciously, even rarely. IMO, to do so every move is ridiculous, other than as a newbie training aid.
7. As you mentioned, the
bo is a staff. To say "bo staff" is redundant. (Just a pet peeve of mine, like hearing
ain't not good grammar.) They come in different lengths - the 6ft
roku shaku is the most common, so often just referred to as "bo,"
jo is about 4 ft,
han bo is 3ft, and
tan bo, 2ft.
These are the points that jumped out at me off the top of my head. None of them take away that most all of your project was very informative. You have a great attitude (masochistic) in asking for critique. Sort of like brining your hands and thrusting them into a bucket of rocks. Might hurt, but can make you tougher.