Question about naps

[Littledragon]

I also have a large range of ages. Here is my schedule - maybe it will help you.

Babies (under 18 months) nap between 9-11. I take this time to do crafts or things with the older kids that we have trouble doing with the babies around.
At 11, we have outdoor play then lunch at noon, play for 15 mintutes after, and story time at 1. Then EVERYONE goes down for a nap at 1:30.

I DO NOT think it is unrealistic to have everyone nap at the same time. It will take time for everyone to adjust, but the point of daycare (for me anyways) is to instill stability and consistency. I think it's important that they all have quiet time at the same time everyday (for them AND YOU). You just have to rearrange the schedule so that you can fit everything in. I've been tweaking my schedule for a while now and I think I have it PERFECT. Everyone gets a perfect amount of learning time, outdoor play, free play and so on. If you like, I can send you my schedule. (My youngest is 10 months and my older is 2.5). So far, the schedule is working GREAT! For me, the trick for the little ones to get proper naps is to ensure 2.5 hours between naps. They all arrive at 7:30 (presumably they've been up for AT LEAST half an hour) so we have free play till nap and then they sleep for an hour and a half. Up at 11, activity for 2.5 hours then another nap. Works great!

There is one kid, however, who is on the line between no morning nap and morning nap, so I put him down between 10-10:30, but he's still up for 11.

Let me know if you want me to send you my schedule and maybe you can get some ideas from it