<p>I think two courses during summer is tough already. There is no need for you to one more course because you not only have to take the challenging courses but also get good grades in those classes. What's the point of taking tough courses if you're gonna get a "C" in those classes? So, I think if you want to do well during summer session, 2 courses listed above are enough. Remember that summer classes go by very fast and you have to do intense work too.
It's good to see that you decided to take more math classes. Oxypunk and jna have some good advices for you, but keep in mind that physics is tough and you need to work hard in that class to get a decent grade. I don't know how physics courses work at your school, but at my school, the first physics class for engineering/physics major has Calculus 2 pre-requisite/co-requisite.
There is also no need to get an AA/AS degree. If you're going for your bachelor, then AA/AS is not that important. Make sure that you prepare to work hard in physics/math classes.</p>