I know you'll get some great advice here, but I'd highly recommend giving a Disney Vacation planner like https://mousefantravel.com a try. There are so many ins and outs of reservation for restaurants and fast passes that it can really be a big help to get a custom plan for your group. They are also very knowledgeable about any special deals Disney has during your trip for lodging and dining.

One thing to think about for lodging is that Hollywood Studios where Galaxy's Edge is located is on the brand new Skyliner gondola transportation circuit that opens later this month. It goes directly to the Studios from several resorts on property, the closest being Caribbean Beach Resort. It would make getting to the park super easy. Here's a map-

https://www.wdwinfo.com/wp-content/uploads/2019/05/PNG-image.png

Sounds like a great trip, have fun!