Nothing sounds silly if it's what works for you. I've been using his training methods since I started running (after trying Couch to 5K to get me started running in the first place and finding that it didn't work for me) but I modify them to what works for me as well. His training plans posted on the runDisney site vary from his training plans on the Apps I have for my cell phone so I kind of combine them. I'm horribly undisciplined though. Half the time I'm too tired or don't have time to fit my running in between work and work.
Your schedule looks good!
Don't worry about the last corral, you'll be fine. And as the PP already mentioned just get there early and you can get towards the front of the corral and even if you can't. I always like to be right at the start of the corral and I'm paranoid about it. I get there super early because of it every time.
It sure would be nice to have cooler weather this year, but I'm pretty sure we wont be that lucky. But still I will hope!
Good luck to your DS on his first 10K! It sounds like fun to get the family involved. But I'm with you on not being anywhere near where I wanted to be. I'm getting nervous that I'm going to blink and it'll be the start of August and I'll have missed all of my training opportunity. Grad Nites are just killing me with sleep and my other job so any free time I have I want to sleep, not run for an hour or so. But so far, we still have time and we can do this!
And decisions are gonna get tough pretty soon on which races to run. Right now I'm debating on three goals for 2015:
- Run every single event here at Disneyland (every 5K, every 10K, every half, every challenge)
- Run my first Coast to Coast (Star Wars since it's inaugural, Tink since I'm going for legacy, and then Wine and Dine because it's the biggest draw for me at WDW)
- If there's any truth to a runDisney event in Paris in 2015, that might be my goal of all goals.
Just take it easy when you are in the parks and you'll be fine

Maybe even all the walking around the parks and rides will tire you out enough that even with your nerves you can get some decent sleep the night before. I remember the night before my first half though. I definitely couldn't sleep.