Put a 2" C.O. or "Test Tee" above the floor. The 2" horizontal 90 looks back-pitched to me by the way.
I can't figure out all the jargon you have stated in statement 2. (Lazy reader I guess.) Some areas will also let you install a 3" C.O. or "Test Tee" horizontally as well for service. Will gain much more room for entrance over that WYE. Again though, I don't believe it meets clearance codes for any area. But you may be playing plumbing p-o-k-e-r with the hand that you are dealt. I don't know the whole layout.