How to get 2000+?

So I am trying to get my SAT Score to 2000+ by the time I apply to colleges. I have taken the SAT two different times. I am taking the SAT for my 3rd and final time this October. I would really like to score 2000 (or higher).

October 2013 (Sophomore Year) PSAT Score (I had surgery less than a week before I took this and was on tons of pain pills. So Probably not the best indicator of anything)
Math:64
Reading:46
Writing:39
Composite:149

October 2014 PSAT (Junior Year)
Math:68
Reading:57
Writing:56
Composite:181

December 2014 Score
Math:690
Critical Reading:590
Writing:580 (Essay:9)
Composite:1860

March 2015 Score
Math:690
Critical Reading:560
Writing:620 (Essay:8)
Composite:1870

What I would like to score in October (Approximately)
Math:750
Critical Reading:620
Writing:690
Composite:2060

I’ll go over my situation with each section.

Math


I end up having to rush on some sections which leads to the occasional stupid mistake.
I’m not very good at a lot of geometry questions. Especially questions involving angle measures.
It seems like I’m not improving my Math score no matter what I do. So I need advice on what I can do to start seeing actual progress.

Reading


I’m a slow reader. (Especially with passages that I find boring which is like all of them)
I’m not good at passage based reading tests in general (SAT or regular school test)
I actually am decent at Sentence Completions. But I would still like to improve.
Similar to Math, I can’t seem to improve my score for this section. (I actually got worse from December to March)

Writing


I read The Ultimate Guide to SAT grammar before I took the March SAT which did help me a lot.
I’m still not very good at the improving paragraphs questions.
It’s hard to get around the No Error option for the identifying errors.
I want to be able to consistently score 10’s on my essays if possible.

Does anybody have any kind of advice for me? It would really be appreciated.