I know I am missing lots of your situation but I think anything you can do to help yourself to detach will only be good for you. It will help with your anger and it will help you to move on.
If you are completely done and don't want to continue on or try then what you are doing is fine and the one of the only things you can do. If he was serious about the dating parting then he will come around and if not, well you will know that too. If deep inside you do want to try, then sure keep up with what you are doing there too because him seeing that you have taken that step to move on will get him curious. May or may not be your goal but it happens.
Anyhow, I would follow through with your packing up and make the place yours( you are keeping it?)
