So classes are already being selected for my senior year and I really need help. I want to know which of the AP combinations will work best for me and look best for colleges.
Basically my definite classes are:
English 12 Honors
Calculus
Physics Honors
Orchestra
German 4 Honors
Basically I have to choose my history class with my options being APUSH or AP US Gov. and I have to chose one elective which I was thinking to be AP German, AP Psych (If my friend can get it offered next year), or the other AP History course. I am really interested in all these topics so whichever would look more challenging to colleges and are the most fun would be ideal.
The general perception is that APUSH is one of the most time-consuming APs, so if you will get a ton of homework in other classes, take Gov. Also, you can take German 4 AND AP German at the same time?! And are you a violist?
I play Viola and due to block scheduling we only have 4 classes a semester for 2 semesters so therefore I can take both German 4 Honors and AP German.
AP German is a top/core AP class, whereas AP Psych is an AP lite. In other words, if you want your schedule to be rigorous, take AP German, but if you want to have a bit of fun senior year, take AP Psych.
As for your social science: what history classes have you taken?
I have taken the required 9th Grade US History Part II Honors and the Required Global Studies Honors. This year I am currently in AP Euro and am happy to say it is my favorite class of the day. Plus at my school AP German is considered one of the most fun courses offered.
Okay then: AP German and APUSH sound like the best choices! 
And they’ll definitely add rigor to your year… although it sounds like you’ve got excellent curriculum rigor already.
I hope you enjoy your senior year! Viel Glueck, or however you’re supposed to do umlauts! And APUSH may be different at your school, at mine it takes about 2/3 of your junior year.
ALTOCLEF4LYFE
Yeah, taking easy classes Senior Year will not feed you bread when you grow up. If I were in your place, I would take the AP German and AP U.S. Gov. IF you are super motivated, then go ahead and take AP German and AP US History, which will take a lot of time and studying, but it will be very rewarding in the long and short run.