In very short form:
Pay attention to the charts; the bottom hasn't shifted much. The seven feet will restrict you from a few places, such as the Meadows. Another issue is the water hyacinth levels, good to do some web searching and local knowledge. You will be too big for some of the local marinas.
Our modern cruising experience in the Delta was almost entirely on a chartered Mainship 430 which we anchored the majority of the time.
There are lots of fun and pretty places to anchor away from it all, including just off to the side of less traveled sloughs,, Sutter, White's, Cache, Prospect for a few instances, even most of Steamboat. Then there are some "lakes", most notably Mildred Island. Anchoring in one of the sloughs, a bow and stern anchor helps keep you off the levee and out of the main channel.
Not all of the bridges open and some change schedule seasonally. There are schedules available on line.
There is a forum over on BoaterEd which is a continuation of the old local Delta forum; worth going back through the archives.
Much of it will remind you of the AICW.
"There's the Right Way, the Wrong Way, and what some guy says he's gotten away with"