He is indeed a cutie pie! 
Yes he will calm down some, but being a kitten he will still get into things if he does now. My solution is my water bottle *insert evil laugh*
I presently have 7 kittens in the house and all but 2 now only have to see it and they go running.
Just say NO in an authoritative voice when you squirt him, don't soak him, one squirt will do the trick. Oh and wait until he heals a bit first from surgery. 
Yes he will calm down some, but being a kitten he will still get into things if he does now. My solution is my water bottle *insert evil laugh*
I presently have 7 kittens in the house and all but 2 now only have to see it and they go running.