Maybe talk to people who lead "local support groups" not just Bipolar , I mean any support group would probably love to know that a person like you " caring for MI people "while you take care of yourself would be an amazing gift to offer. People just need hope, Your life and struggle and ability to push and push and not let anything stop you.. well hell , if that doesn't inspire hope and help others really think about "stigma"
I would advise you to start small , make sure your mental health is staying in good working order and help whomever you can.
I do think you need to be mindful that you may infact run into a current patient and decide ahead of time how you might deal with what could be awkward .. and either your patient will love you even more or have them second guessing your ability to effectively care for them while you deal with the same illness.
I think your an amazing person with a huge heart