7.Checkride(s) for IR and probably CPL, and then for ATP?
Hmm...you have JAR CPL-H ... But still not JAR CPL-H with IR(H) ....or ICAO, whatever ...
I´m not sure that only checkride for FAA IR(H) will be enough ...
...I think you should first have to put your IR(H) into JAR or ICAO licence...
Because, if you miss this step, you will stay (only) on FAA CPL-H VFR...that mean, no FAA ATPL-H.
Only my opinion, maybe I´m wrong, maybe someone here can explain this better ...
note1: if you have ICAO CPL(H), first have to complete JAR ATPL(H) theory, before JAR CPL (H) licence....(bridge from A to H theory)...