(PaulaJay1) wrote:
What is the minimum legal distance (altitude) to fly VFR under a Class B
"wedding cake"? CLE has a 1900 ft floor at the north side by Lake Erie and I
have flown at 1800 to go around CLE.

Nothing wrong with that from a legal standpoint.

Today I was coming around CLE decending IFR. When in VMS I
cancelled IFR and remained on squak for advisories. The controller wanted me
at 3000 when under a 4000 ft designated altitude.

If you're VFR, you decide what altitude to fly at. I can't see any
reason why flying at 3500 below at 4000 foot floor would be
inappropriate.