Three new preps and I'm intimidated - please help!

Hi everyone! I'm a sixth-year biology teacher with experience in NYS Living Environment, Pre-AP Bio, and AP Bio across grades 8, 9, and 12. My partner is moving across the state and I got an offer with a school near his work, but they want me to teach AP Environmental, NYS Earth and Space Science, and Science 8 (Physical Science). To say I'm intimidated would be a HUGE understatement! I'm seriously considering doing another year of long distance with my partner just for my own sanity so I don't have to move there and take this job lol!! What resources would you recommend to make this as painless as possible? Any tips, tricks, books I should buy, etc.? Thank you so much in advance!!