1. computer is a must-buy, either laptop or desktop will do; here
2. here
3. depends, personally do not recommend AP (accelerated program)
4. yes

whether the course is suitable for you, it depends...

there're examples of ppl who take the course(AP) are very successful, also many turn out to be average or even below average...

personally I don't recommend you to take the AP course.

AP refers to Accelerated Program,
RP refers to Regular Program;

why don't i recommend ap..?
hehe... why not give yourself more time to learn more things?
why not give yourself 20 months to try out something that you have not tried before? 7 months' course is rather stressed you know...

anyway.. if you're strong enough in acdemic area and you think 20 months is too long for a pre-university period, you could give it a try.