I currently have all 7 books in English however I am unable to locate series extra 1: hardworking photographer Takaba Akihito's fulfilling life as a housewife' and 'series extra 2: the romantic life of service of hardworking photographer Takaba Akihito.' Doesn't matter if it's in original language or English. I would just really like a physical copy if anyone can help point me in the right direction to search. Thanks in advance.

You might want to check out Sublime's published version of the Finder series. They've included several of "The Hardworking Photographer Takaba Akihito..." extras at the end of their volumes.