AF wife and SAHM of three
DS(2007.March) DD(2009.July) DS(2012.December)
I think you are set. Sounds like a fun party!
Thanks, all! It was a hit. I forgot to get music, but we had laughter and fun abounding. I brought 4 other kids home from school, had a few more get dropped off, and a couple people not only dropped off the invited K student, but also 2 older siblings (!!!!!!) and guess who came to get their (pile of) kids 30 minutes late... those 2 families! Actually, the one neighbor family needed to be escorted home so that we could eat dinner.
There were stomp rockets flying , kids swinging, bouncing jumping rope, etc. Someone reached into the hidden toys and found the tennis rackets, which ended up whacking DS1 in the nose. Several kids had bumps and scrapes on the driveway. We needed a nurse, lol.
But...we didn't need anything else organized. The face-painting teenager was DD's favorite thing!
I think you have plenty to entertain the kids. I wouldn't add any activity.