Where Monitor and Warrior might actually meet

Could blockade breaking force Warrior to fight Monitor in Monitor's preferred waters?

Partly, but coastal waters could still leave maneuvering room, and the British would operate with supporting ships rather than send Warrior alone.

The proposed scenario is an attempt to break a blockade, so Warrior would be moving toward Monitor's coastal theater. That does not mean every coastal approach was too confined for the British ship to maneuver. With contemporary speeds in the low teens, many approaches still offered useful sea room. A convoy operation would also involve multiple ships and British tactical choices, making the encounter a fleet problem rather than a contest between two isolated hulls.