I am assuming there are 4 adults(parents) and 4 teenage girls???
If so, You can do one set of parents in the MBR, and two teenage girls on the pullout and the other set of parents and the other 2 teenage girls in the 2nd BR OR you can do all 4 teenage girls in the 2nd BR, one set of parents in the MBR & one set of parents on the pullout.
You'll have 2 full baths, a laundry room with fullsize washer/dryer, a full kitchen with full size appliances, a table that will seat 4, an outdoor balcony with another table that will seat 4.
If all these folks know each other fairly well, it shouldn't be too bad, as long as none of the people are really "high maintenance" and would take hours in the bathroom getting ready.
There is also room in the OKW 2BR to bring an aerobed.