Well done. Sounds like you applied your thought process in a most sensible manner. I wish all aviators applied the same upgrade/downgrade thought-process (althouth you obviously don't have to miss out the request for RIS if you want that extra bit of 'security').
Ask for what you want and then and, provided that the controller and you are able to meet the relevant responsibilities, that is what you will get - that is what ATSOCAS is all about.