I have aspergers, depression and had PTSD and a BA in psychology. Looks like a good plan. My high school psych class did not count when I got to college but it was still really valuable... I breezed through my required intro psych classes with little effort... A big help when you are dealing with all the transitions of going to college.
Also, as a psych major one of the things I did in college was find the area I wanted to work on and focused on that as much as I could. My area of interest was child abuse so most of my papers in one way or another related to child development and child abuse. By the time I got to 2nd semester my Jr year papers were easy. I already had all my research and note cards done all I had to do was put them together into a new paper that fit the topic. It saved my tons of time in the library and a lot of money on photocopying things. My Sr thesis, a two semester class, only took me about 8 hours to complete. As an Aspi I think it is easier to stick to one topic and not get bored with it.
Also, taking Stats in high school would be good too. Getting into graduate school is even harder than getting into college. If you take stats in high school you will do better in it at college and it will look better on your transcripts.
Seeing as you don't seem to want to stop until your PhD another thing I did that helped was to take the classes I wouldn't get as good a grade in early on in college (biology!). One, it gives you the chance to take them again. Two when you interview for graduate school lower grades late in college are more difficult to explain than a low grade your freshman year. I was able to explain away a low biology grade as immaturity and point out that all my grades after my freshman year were significantly better.