3 year bday party time??

PSU Export

I'm planning a small bday party for our soon to be 3 year old. She has become extremely inconsistent with napping, so she either doesn't or she could wake as late as 4:30. That's a separate issue. We were thinking of having the party at 11 and providing lunch for a few of her friends and our family. What do you think of this time? It is the only time I can come up with where I think she will be pleasant and awake. We also are hoping it will be warm enough to play outside because my husband bought a bounce house. Any thoughts? What has worked for you?