Its an impressive idea!
Couple thoughts
Maybe think of some of the questions as what you might face in an interview None of these are meant to be snarky, but they are real world questions I could see an employer ask.
What do you get out of working with them?
What do they get out of working with you?
How much will your ptsd overlap their experiences, and are you at a place where you can manage that?
How do you set boundaries with clients?
Can you handle this work being about them rather than you (Ya, that's actually a question right off the 911 page)
Im thinking - can you make a bullet list of 5 or so things that answer those questions? Not anything long or drawn out. Just statements of how this work benefits both of you. It might help in deciding which field to work in.
Another thought (because oh ya I'm on a roll!)
How much one on one contact have you had with people in these situations? How familiar are you with their day to day life?
What about asking to sit in on some open group meetings or volunteer at a homeless shelter or just hang out where they congregate and ask them about their struggles? Tell them what you plan is and ask if they think you are on the right track.
These might give you a better view of what they need from you, that you could then use to help decide which path to take
And no - you are not too old. You have a wealth of knowledge and experience that someone just starting out can't even begin to understand. You have a background that can understand and acknowledge their struggles - which is HUGE.
I say go for it!
