I would not want 10 13 yr olds over my house for 4 hours. You are nuts! I had 10 10 yr olds over and that was enough for me! Seriously you need to reconsider having an outside activity:
1. Take them to a mall and have them break up into 2 or groups of 3 min and let them roam for 2 hrs. Have them do a sit down dinner but you'd need to pay so maybe pizza or something cheap? Done.
2. Take them to Dave and Busters - 2 hrs. Eat. Done.
3. Take them to a long ass movie but again you need to pay so find a matinee and then food.
4. Escape room but pricey.
5. Roller/Ice skating then dinner.
I repeat - you do NOT want 10 13 yr old girls in your home for 4 hrs. From one mom to another