Hi OP,
We did a similar trip in the first week of May 2016. It was me, DH and our DD9 (at the time). We are also from the West Coast and had been to
Disneyland many times. I'm not sure if you have also been to Disneyland, but we wanted to focus on the parks specific to WDW and not spend as much time at MK as most visitors.
I did A LOT of research and decided that the best location for us was an Epcot resort, so that we could walk to both Epcot and HS. (Since we are used to walking to both resorts at DLR.) I also decided that for an 8-night stay, having some space and a kitchen and washer/dryer would be best. I waited until the Spring Discounts were announced in January and booked a 1-bedroom villa at the Boardwalk Villas direct through the WDW website. We had a full kitchen, washer/dryer, 1 bedroom with a King bed and a sofabed in the living room. The total cost for 8 nights was $3,900. We had 2 balconies that overlooked the river towards the Swan. And we could see the HS fireworks every night from our window in the living room. The walk to Epcot was 10 minutes and the walk to HS was 15. We LOVED the Boardwalk Villas and would recommend it to anyone!
We had 6 day non-hopping park tickets (bought separately through
Undercover Tourist)...2 EP, 1 HS, 1 AK, 2 MK. And we spent one day at The Kennedy Space Center. We got a rental car at MCO for the whole time (resort parking was free back then). So we walked to EP & HS, drove to AK and took the bus to MK. We drove to the grocery store once and to AKL for dinner at Sanaa too. My DH went shopping at the factory stores too, while DD and I were at the pool. We liked having a car for some freedom.
You might want to consider a 1 or 2 bedroom villa at an Epcot resort. You can get a grocery delivery (we used Garden Grocer). We loved having breakfast in our villa. Although Club Level is nice, you don't have to get out of your PJ's when you can eat in your own villa!
Hope you have a great trip!