Re: high breakfalls?
Don't do them.
Learned how in Ju Jitsu, used to do them, but not anymore.
One of my students (and Judo Black belt) used to practice in a Dojo in a large Aikido organization. Someone observed that a large percentage of the older Sr. students were 'all busted up'. They concluded it must have been from the years of brakfalls. They no longer do them, and the latest explanation is that you can practice longer/harder without the breakfalls.
My student will occassionally launch himself in class, but totally unnecessary, except for keep ing the skill.