Probably too late to be useful, but...
You can get through. Entering from the Bay side, you'll see about 6' at the R4... and I mean RIGHT AT the R4. Hug it so you can almost touch it. And don't attempt it if another boat is coming out at the same time; wait your turn.
When we went through a few weeks ago, there was an additional temporary green float marker there... but the best depth is right at the red. Many of the local fishing
fleet captains actually pass on the wrong side of the R4, but you won't have to do that (and they draw much less anyway.)