CC to Ivy

So I’m currently attending a small community college in New Jersey. I am almost finished with my 2nd semester. I took 4 classes in fall 2014, and taking 5 classes in Spring 2015. I will also be taking 2 classes this Summer. I am pretty sure that I’ll have a 4.0 GPA by the end of all 3 semesters (38 credits) and plan to start applying to 4 year Universities during Summer.

I’m also in the honors program at the school and hopefully will be elected for an executive position in the Student Government Organization.

I am wondering what my chances are for getting into an Ivy League university?

Also some general questions regarding transferring.

Why do people apply after their first year when they are going to spend another year at the community college?

Do 4 year universities know that this is your intention or do you have to inform them.

Don’t 4 year universities want to see how well you do throughout all 2 years of CC?

Do I still need to take the SAT when I’m a college student? I know the general answer is that it will help, but how much of a factor is it?

If I get accepted into a 4 year universities based on just 3 semesters, and my GPA drops (not significantly) in the following 2 semesters at CC, does that change my admission at all?

I do not like any of the 4 year universities in New Jersey, what are my chances to get into an Ivy League school or high end UC schools like USC, UCLA, and Berkeley?

I’m an international student and my major is accounting, and I know most Ivy leagues do not have a B.S. in accounting/business. I am looking at UPenn and Cornell as reaches (given that I can maintain a 4.0 GPA by this summer). I am also nervous that my GPA will drop to 3.8’ish next year due to more difficult accounting courses.

separate threads for each?