The only way you can be bullet proof is by getting your local license.
As flynn says there are some pretty major discussions to be had in the not so distant future. But even if it does come through, fast forward a few years and they will have another shot at stopping it if the N reg fleet keeps increasing.
If you do the ATPL's for the IR you might as well knock the CPL off as well if you own your own machine. Your insurance premiums may drop once you have it and cover the additional in a few years. Also takes shifting mates planes out of a grey area into a legal one if doing it for free.
If you want a FAA ticket at a later date you can either get a stand alone or do the FAA IR exam and flight test. Other way around and its a pain in the rear.