First of all, I'm quite surprised at the alleged IB student a) typing like that and b) suggesting you take your senior year easy, as that seems off to me regarding the dedication to working hard IB students have instilled in them. Anyway, that seems like a very challenging course load, especially if you intend to participate on a swim team at the same time. What do you want to major in during college?
If it's not a science type of major, I would recommend dropping AP Bio. Even if it is a science major, downgrading to a non-AP level of bio should give you at least a basic background that could be helpful to fall back on for college-level biology courses. Also, the research project seems kind of pointless.
It might look interesting to colleges when you apply, but universities are more likely to accept you for stellar grades in all of your classes along with participating on a swim team rather than letting your grades slip for the research project. At the same time, you may be able to get along with it once you are no longer taking AP Bio, so remember to consider that as well. As you said, AP Psych should be pretty straightforward.
I found it to be an interesting class with easily-grasped concepts. The economics courses at the community college shouldn't be too bad. At the very least, don't be too intimidated just because they are at a community college.
Although the courses may require a lot of reading, community colleges usually offer smaller class sizes and a good amount of individual attention to help you learn well. Good luck with this year! It sounds like you have a good understanding of what you need to do to succeed and look great on your college applications, so I hope that those go well for you, too!
I had similar problems in school but I found the most efficient way to manage was through assigning specific times to different things. For example, after swim practice you could devote an hour to each subject to do hw or miscellaneous studying. This way you'll have a routine and organized schedule without feeling over whelmed.
Also this method ensures nothing is accidentally over looked or given more time unless you edit the schedule to reflect such a thing.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.