I will be sorely disappointed if Taylor cannot accomodate such a simple bracing request, a pattern that they produce on all their production cedar topped 5's and 7's dozens, if not hundreds, of times a week. All they have to do is take the premium top you picked, walk across the plant to where cedar tops are braced, and do the same exact thing they've already done countless times and will most certainly do countless more times in the future.
As well, you are a customer that has purchased well over $20,000 in product from them, sing their praises in an open forum day in and day out, teach others about their guitars, and encourage their purchase.
If they can't make your BTO with Standard II bracing, my fanship will take a rather large hit, in spite of the fact I'm on my fifth Taylor at the moment, and the one I have now, a cedar top with, you guessed it, Standard II bracing, is the best Taylor I have ever heard: bar none. Beat a couple of ziricotes I heard among a plethora of others.
Anyway, I hope it works out for you.