To answer your question, Epcot on a Friday during Food and Wine Festival is not ideal. And Magic Kingdom on a Saturday in the heart of Mickey's Party season is not ideal. Which is why those parks are not recommended. I would be less concerned about the Hollywood Studios recommendation as there isn't a lot of variability in crowds and wait times with Fantasmic scheduled nightly.
The problem with Hollywood Studios during Mickey's Party season is that so many people avoid Magic Kingdom on Party nights with the 7pm close. So you might go from 35,000 people in MK on a Friday and then 65,000 on a Saturday. Those 30,000 people don't stay home on Friday - they're spread out among the other parks. And with Studios offering a pretty reliable schedule and Fantasmic every night, it tends to be less busy on days when Magic Kingdom and Epcot are pulling in the crowds.
As far as what schedule would be ideal in your situation, I would need to see which parks you're planning to go to on which days.
Epcot on a Friday during Food and Wine is no joke. But you can beat those crowds by doing 9am - 11am in Future World, 11am - 5pm in World Showcase, and then 5pm - 9pm or so back in Future World. Otherwise you're liable to see me and my blogging buddies cursing at children at the Scotland booth.
Magic Kingdom on a Saturday when it closes at 7pm on 3 or 4 nights isn't ideal either. But you can still do well from 9am - 1pm and then 7pm - close. The middle of the day is best spent at the resort or at the highest capacity/lowest popularity attractions.
Keep in mind October is still pretty hot too.