Sorry, but I have to be honest here....yuk...they're paying you to be a guinnea pig.
Read up on this first. Read Huggins info. If you don't get the cavitations cleaned properly, you could have more long-term problems. Regardless of your financial woes, I'd re-think this. Financial problems are temporary, your health is the one thing that you have to live with every day for the rest of your life.
As Dr. Schulze would say (about buying a juicer), sell something, sell your TV, something anything, and I'll say that about your teeth. Find a Huggin's dentist who will work with you and clean those cavitations as he's removing. Be careful though, there are a lot of people who will just take your money. Use your judgement.
I'm struggling too on what to do about 4 RCs. I understand these are big decisions. Move ahead with caution.