I am also an intelligent person whose Bipolar Disorder made it impossible for me to attend college and get a degree in the same way as everyone else.
Are you on any medication? I was not diagnosed until I was 30 - so i was trying to do things that my chemical imbalance made impossible for me.
It's hard for me to factor in the ADHD because that can have a tremendous effect on your learning curve but I don't have any clue what ADHD & Bipolar will do to the whole situation.
It may be that you would be able to work and take a few classes a semester rather than do the traditional 4-6 yr college schedule. Are you at a spot in life where you could have cheap housing (home still?) and just take longer to graduate?
In my book it is just pushing it too far to try to do things in a normal fashion with a disorder like Bipolar. I'll be interested in how others did.
By the way I'm Type I Bipolar so I was at the severe end of the Bipolar landscape...