Hello,
Typically WDW is less crowded the first week of Oct in comparison to the last week. Additionally, according to Touring Plans, the 1st week of October will be the week you want to go. There will be a shorter wait time during this time period. Have a great time!
Keep in mind that the Tower of Terror 10 miler is October 5th. I was originally booked Oct 5-12 and backed my trip up a couple weeks into september to save some money.
I found an awesome website!! go to your first visit .net(obviously no spaces!) It won't let me do a link until I have 10 posts so I had to do it this way! He puts the weeks in ranking order based on weather and crowds!! Have fun planning!
last week of october, i mean it may or may not be my birthday on the 27th and may or may not be when i am going down BUT last year crowds were super manageable and the weather is perfect