I don't know what PSEO means but I think if there are issues with processing speed, AP might not be ideal. Talk to the school administration and teachers, but when I took AP courses it just never really "clicked" for me...but outside of AP, the same courses came very easily and were subjects I loved (which is why they put me in AP every other year, because I excelled so much outside of it...but I would choose not to be in it the following year and et cetera...it was a cycle with me).

What is PSEO?