S.S.
October is a great time for Disney, particularly if it's on a week day! We've always stayed in the moderate resorts (All Stars, Music, Sports, etc - great prices). They have great food courts, a nice property, and since we were at the parks most of the time, we didn't have any issues with the resort.
We didn't do a park hopper because we knew that we'd stay in each park for the day. When we arrived, we went straight to Magic Kingdom and then returned there the next day (there was plenty to do there for our toddler). I've heard you neeed a full day for SeaWorld, too.
I purchased one of the Unofficial Guide to Disney World, and spent $6 to access their website - touringplans.com which was an UNBELIEVABLE resource. They helped me figure out which parks to go to on which days (they know which parks will be busy and how busy), helped me map out my day (all rides, meals, shows, etc.) and described all the restaurants (reviews, types of food, prices, etc). Super helpful. We also purchased the Food package with Disney which was extremely cost effective.
I've found that while Disney is expensive there are lots of ways to save, if you look around. Feel free to message me privately for more details/ideas.