For 9th Grade, should I take Biology Honors or regular?

[moonii]

I'm currently in the eighth grade and barely managed an A every quarter, but my teachers said they have faith in me and think it would be a better choice for me to be in Honors. I trust my teachers, but I don't know if I can have faith in myself. If I managed an A (barely) every quarter, do you think I still can? I'm currently in all honors (and same with last year.)
If I take Biology Honors, I'm not sure if I can handle four honors/pre-AP classes. (Though I get pretty much all A's every quarter.) My teachers say that I should only take honors courses that I feel passionate about.

On my course selection sheet, so far I've chosen:
Pre-AP World Civilization (English)
Pre-AP World Civilization (Geography)
Biology (need to decide honors or reg)
Geometry Honors
Orchestra
Spanish 2

I have to work really hard in both math and science, so if I decide upon Biology Honors, should I drop math honors? Or, looking at how I've fared, choose all honors core classes?