Welcome to the Disney Parks Moms Panel, Erin!
And thank you so much for your question, I can definitely help clarify this for you :)
ChEAR Squad Packages and the Race Retreat are options only available for the half marathon distance. Since you are participating in the 10K, you will not need to purchase these particular race enhancements.
The only additional event available during the 10K is the Breakfast and you mentioned you've already purchased tickets for that. And no need to worry about missing it, Breakfast hours are 6:30am-8:30am and with the race starting at 5:30am, runners will have finished in plenty of time. I do want to suggest having your husband and children meet you in the Breakfast tent (it will be marked Race Retreat because it's the same large tent used during the half marathon the next day). The reason I suggest this is because spectating for the 10K is very tough due to the course layout and they will only be able to see you at the start line and finish line - if they're lucky enough to get a good spot. The finish line grandstand will be the best option, there will be no runner viewing along the course for this race.
I hope this helps, Erin! Please do not hesitate to reach out to me with any additional questions you may have, I am here to help you navigate the ins and outs of your runDisney-cation.
Faith