You said that you went last November. Are your dates that you can go set in stone, or can you adjust them? We went Nov/Dec 2013....then again in May/June 2014, and our last trip was in Oct/Nov, and ended just a week before our APs expired. Our next trip won't be again in May, so we are not renewing but will be getting APs again in May (because we're also going in August/September and then November/Dec.
We get APs because we go so often.....even if we only went for a week each trip it would be worth it for us. In reality we go for 3 to 4 weeks at a time, so obviously it's worth it to us.
We have purchased the TIW for the last 6 years.....but this year we haven't used it much, so we're going to have to rethink for our May 2015 purchase. In the past we have enjoyed doing a few TS a week.....but the last two trips we have found that the prices are just ridiculous to us for what we get, so we've not done as many TS. Basically you need to spend about $500 in order to reach the break even point.....if you spend more than you're saving money. This year we spent $621....so our savings was there, but not by much.
We stay offsite and rent a condo/house (using vrbo.com). We seldom pay more than $50-60 a night (for a 3 bedroom, you may need a larger place). It has a full kitchen so we eat breakfast before we head out, we typically do a CS or maybe a TS for lunch, and then head home when we're ready for dinner. The nights we want to be at the park, we may either do both meals at CS or if we started at rope drop we'll take a break at lunch or dinner and go home. We enjoy cooking, so not a big deal for us, and we'll cook larger meals so we can freeze half and have it to simply reheat....I know some object to cooking on their vacation, so each to their own.
You really need to do the math to know what works for your family.....everyone is different so no one can really tell you exactly what will work for you. But the above is what works for us. If we stayed on site we would not be able to afford as many or as long of trips....so we decided a few years ago that longer/more trips was more important to us than the themeing at the park. We also don't enjoy public transportation, so the buses is not appealing to us. We rent a small car to get us around, the AP means free parking. It also means we're free to go grocery shopping as needed, to go to many of the wonderful restaurants around the area...many with MUCH better food than at Disney and about half the price. For what I would pay for ONE steak at Disney I can buy all three of us a wonderful dinner out, and if we want steak we simply stop at the grocery and get steak and all the fixings for that ONE disney steak.