The Quick version of The Complete Children's Party Survival Guide
Only invite as many children as you can comfortably accommodate.
Avoid inviting known troublemakers.
The optimum time for a successful children's party is
Avoid adding additional time at the beginning and end of the party for taking coats off, putting them on, giving out party bags, etc.
Make a separate list of the party time and the names and number of guests invited.
For more detailed information on the above points see
Let's Eat (1)
Let's Eat (2)