Opinions wanted for replacement Rear Spring selection. Thank you

Hi All, I just purchased this 1970 Dart Swinger 340 4 Speed. It’s got saggy original springs and clapped out air shocks. I plan to replace the springs and install Monroe oil/gas filled shocks. I’m the weekend warrior that takes the car out a drives it for recreation. No racetrack or aggressive pulls with the exception of occasional burnout. My question is which Spring should I purchase?

I have easy access to Mopar SuperStock Springs.
P4120863/4120864 2800lbs
P3412002/3412003 3200lbs
My friend recently installed a set of the 3200lb springs and now his car is very high in the back. Much more than factory. I’m looking for opinions whether the 2800lb springs would allow rear to sit lower than the 3200lb springs? Assuming maybe lower than the 3200lbs but higher than the factory stock height. Perhaps there is a different spring that is available that people can suggest for a factory ride height/clearance. I’ll post couple pictures of the car. Thanks in advance.
IMG_4674.jpegIMG_4676.jpegIMG_4678.jpeg