"ke" translates to "the", doesn't it?
yes, but in cases like this you need it anyway
Would "Makemake au i hoʻokahi koloaka lōpū." also work?
That would work, but a more common choice would probably be: "Makemake au i kekahi koloaka lōpū."
And a shorter version--which DL just accepted--is: Makemake au i koloaka lōpū. (7/25/2020)