Here is a website that might help a little bit:
Maybe you have already seen that one.
It's really up to you, but if you are sure you want to be a nurse, then go for it as soon as possible rather than finishing your general studies degree - that is, if you can get into a nursing program before finishing the general studies degree. Long waiting lists for nursing schools are common. Of course, don't let me talk you out of that general studies degree if you have your heart set on it; there's nothing wrong with that.
Different schools vary on what they require for their nursing students. Some require biology 1, others do not. Like Tweety said, you will definitely need A&P I and II, and Microbiology. Usually they don't require a really high level of Chemistry, usually only Chem 1, but sometimes more. When you are checking out a school, see if you can set up an appointment with an advisor or somebody from that school. They are the best source to be able to tell you what you need for their program. Also, you can often find out by checking out the school's website what they require. You say that you want to transfer from community college; does that mean that you want to get into a 4 year school? If so, that's definitely a good thing, however they require more general studies than associates degree schools do, but all of those additional general studies really do prepare you better.
As for the waiting list, again, it depends on the school, but not every one of them requires a 4.0, however, you definitely want to keep your grades up above a 3.0. Better yet, above a 3.5. I transferred from a community college to a 4 year school without a 4.0. The community college I transferred from had about 750 people applying for 90 openings - the waiting list was unreal. Since transferring, my GPA has improved; the teaching is better in this case.
Good luck! Don't quit trying.