All ok. With the proviso in the case above. If when you get there it is pretty certain that the ball can only be in the WH then the provisional is abandoned and R26 kicks in. Any strokes with the provisional are disregarded.

27-2b)
The player may play a provisional ball until he reaches the place where the original ball is likely to be.
If there is reasonable evidence that the original ball is lost in a water hazard,the player must proceed in accordance with Rule 26-1.