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.