MikeeB,
Going strictly according to the letter of the rules. Any subsequent clearance automatically cancels the previous clearance, any restrictions or reports still required should be re-iterated in the subsequent clearance. ie If the controller still required you to report final then this would have been included in your touch and go instructions.
As mentioned above, the controller probably gave you it nice and early because it was quiet and to allow you to concentrate on flying the aircraft for the rest of the circuit. Either that or they were busy counting their Christmas/ Year end bonus.( Yeah right!)
However your report on final shows good airmanship. ( well done fella ). It promotes good situational awareness for all concerned and allows the controller to give you a more up to date surface wind reading.
Wheely