Well, duh. Alternating dismay and elation, and again dismay, and again elation...
Dismay, because I realized most of the books I had already read for the awards challenge this year were NOT the first book in the series. So I wouldn't be able to use them.
Then elation, because "In the Night Garden" WAS the first book in the "Orphan's tales" series, and that series won the Mythopoeic award.
Then dismay again, because the category for Mythopoeic was "runner up", and the %^&()_ series WON!
And finally elation again, because I used "In the Night Garden" for my World Fantasy category, so I could read the 2nd book and that would qualify for the series. under your rules.
And at last dismay for the other parts of the challenge: Are you implying that for the Extended Super Challenge, the entire series has to be read? And all the novels in the series have to be new to the reader? That would disqualify most long-standing series for me, and would put extended series out of the reach of almost every reader:
For example, I was planning to finish the "Tales from the Malazan Book of the Fallen" by reading "The Crippled God," which would give me three books in that series read this year. But if all the books had to be new, and read this year, that series would be out for me.
And the "Temeraire" series might be possible, with only 6 books to date, but I can use Robin Hobb's "Rain Wilds Chronicles," which currently has only 2 published books, giving me an advantage over someone choosing a longer series.
This may all be a moot point: how many people are even considering the "Extended Super Challenge?"