First of all I don t know where to start after reading your story. So I shall start by sending you a hug!
To the parts of your story that I can relate to is being diagnosed with PTSD at so young an age and on medication. There are so many labels as supposed diagnosis before properly taking in info and assessing a person. During my growing up years depression/mental illness was never talked about. It was the big secret! So I wasn't diagnosed until much later in life and seems that I'm medication resistant.
For me I bought into all those labels and now thinking maybe that wasn't so helpful but would have been better to be given skills to deal with what I have to live with versus just prescribing a pill for everything. It's better to deal with what caused it and skills/ways to better cope.
You ask whether to deal with health or college. If you're not healthy you won't be able to attend college. So I guess that's where I would start. As you progress in your health reward yourself by taking a college class to test the waters out (so to speak). I went to college on the 10 year plan working full-time and college classes at night and what I could afford.
You built your own computer which that alone is awesome and intelligent. You wrote your story which shows your courage and determination . Please continue to move forward for YOU!
Hope this is of some help.