I tried Sac. to Rio Vista once. I almost got totally swamped when a huge 60' cruiser passed me just south of the Rio Vista Bridge. ----I just turned around and fled like a little girl. BTW it should take you about 1-1-1/2 hours tops.
done it a few times. If you just stay the course it should be ok. there is deep water all the way. Just wach out for floating debris. No different than just a normal day on the delta.