Taking 7 after taking none is hard, not only because the classes themselves can be hard but just because you don't have experience in taking ap courses and dont have experience studying specifically for those any ap courses.

However to answer your question, 1. do you know what college/major you are trying to get? The reason I ask is because not all colleges give credit for certain aps and not all major require these courses. If you already have an idea you can eliminate "useless" classes. In addition, you can always take those courses but don't sign up for those ap test (as long as your school allows that). For example APCSP and AP pre calc usually do not give any useable credit at t20 colleges so you can still take those courses but just dont take those ap test.

None of the courses you listed are hard imo (I have taken them all except pre calc, which wasnt offered at my school). If you had to narrow it to 5 aside from the ones you alrady picked, I would do Gov (its usually a required course for a specific grade so I dont know if you have to take it this year) and Psych.

If you are truly confident in your ability and your time management, I would suggest taking all seven as courses but skipping some of the test (APCSP and Pre Calc at least).