Kaiser has good Plastic surgeons BUT as a non-Kaiser Plastic surgeon I am ASSUMING that like other company employed physicians they are not compensated for cosmetic surgery.
Everybody loses weight differently and there are different variations in skin excess among different people which therefore require different operation and different prioritization and sequencing of such body contouring procedures. The vast majority of people complain the most about their abdomens since this is where the skin overhang is most visible.
The question that needs to be asked is : Have you had a tummy tuck YET? If not, it would be easiest to coordinate the repair of your ventral hernia (which SHOULD BE covered by Kaiser) with the Tummy Tuck which may or may not be.
The arm lift / brachioplasty and augmentation lift / mastopexy could be stages later to allow you a chance for a quicker recovery.
I would get an appointment with a Kaiser Plastic Surgeon and then ask him / her on what is covered and if so, what the best sequencing of procedures would be.
Hope this was helpful.