Starting to Build Veg and Flower room! Need exhuast intake help !!

Hey guys.. Long story short I have a 8x5 veg room and a 10x5 flower room that I plan on converting over the next week.. My biggest question is.. with the two rooms will I need two separate exhaust/intake setups? I have watched countless videos and read hundreds of threads but I haven't seen the answers I've been looking for yet so I hope one of you can help. Each room has a small basement window on the far wall.. Do you suggest pumping the exhaust back into my basement instead of outside?? Thanks for reading.. Looking forward to help !!!

You could potentially exhaust both rooms with one 8" or 10" fan. I would tee off from each room into one fan and give each room its own passive intakes. However, I would run a seperate fan to cool the lights as well.

As for exhausting into the house, is it cold where you are? Either way, you are going to want a quality carbon filter.

imho i would keep it from the outside as much as possible. if i could afford to double scrub my air i would.. bit the more crap sticking out a basement window the better you are..