It seems like you're pretty much doing it.
Here's a question though, about the vest... My girls never used it, tried, but felt they were being squeezed to death... Do you only do the vest sitting up or do you also lay on your sides, back and inclined? Or do they, the docs, not think that the laying down and inclined positions are important with the vest?
Anyhow, deep/active cycles of breathing (aka huff coughing) is an option. I am sure you are familiar with it. Thought I'd describe it then decided to just post a link. Hope this helps. This is what we were instructed on to use while we were stationed in Germany but used a Dutch CF clinic. The Dutch physiotherapist instructed my girls on how to do this and then followed up at each appointment and during hospitalizations. Anna' found this technique extremely helpful in the days following transplant.
<a target=_blank class=ftalternatingbarlinklarge href="http://www.northdevonhealth.nhs.uk/patientinformation/physiotherapy/active_cycle_of_breathing_techniques.htm
">http://www.northdevonhealth.nh...athing_techniques.htm
</a>
Hope this helps.