Dear Sir,
“Re or er? That is the question.”
Since you asked ... English is an official or co-official language in 85 countries and territories worldwide. Yet only one country — the United States, along with its five or so non‑sovereign territories like Puerto Rico and Guam — uses American English spellings.
Everyone else uses what can be called International English. While this doesn’t always mean pure British English (with spellings like “tyre,” “kerb” and “gaol”), it consistently spells the “-er” endings of American English as “-re”: “centre” rather than “center.” Similarly, American “-or” endings generally become “-our” (“labour,” “colourise”), “-og” becomes “-ogue” (“dialogue” instead of “dialog”), and there are many other differences besides.
Since Lakeside is not yet part of the United States, and since U.S. citizens are not the only English‑speaking expats here, it would make far more sense to adopt International English over American English.
While the Associated Press Stylebook is the journalism standard in the United States, it, too, should not be applied strictly outside that country. Instead, perhaps you might consider using the Guardian Style Guide—the gold standard for International English?
Garry Musgrave