The C414s are supposed to be some of the most versatile mics on the market, certainly in their price bracket, as well as having really low self-noise, etc.; I'm sure you could get good results with these mics. I doubt you would need the gold-grille version that much, though, as the stuff I've read suggests it may not be all that different from the silver-grille one, you know. The gold-grille mic has a bit more of a presence peak and maybe a touch more commercial sheen, but I'm not sure you would ever need that on classical recordings. Either mic should be bright enough to bring out the best in any of your female singers anyway.
Also, in case you're likely to do a lot of ensemble recordings, it might be worth scouring the Internet for a few articles on some of the many different stereo microphone (placement) techniques employed to record orchestral and other ensemble music, before you commit yourself to any purchases. Here is one article to get you started, in case this would help: http://www.soundonsound.com/sos/1997...reomiking.html
I don't know whether you were actually intending to use the two silver-grille mics as stereo room mics, together with the one gold-grille mic as the centrepiece mic. I think a great thing for you would be to find a really nice pair of stereo room mics to capture the church sound. Somebody else more familiar with this territory can maybe confirm whether these three mics would be appropriate for such an overall setup.
P.S. In your position, I would probably have a look at the ADK TL as well. It's not the quietest or most sensitive mic around, so it might not be the best for recording subtle room ambience, or for instruments/material covering a wide dynamic range (e.g. highly nuanced acoustic guitar), but it is supposed to offer a transparent tone that should also be a bit more neutral than the tone of the C414s (which are on the bright side, though no worse for that). It was supposedly designed for all those 'critical' recordings of chamber music etc. I haven't used it, and I doubt it would simply outdo the C414s (if only because they're supposed to be quite different from it) but it might just be right up your street, not least because you can bag a matched pair from Turnkey for £450 or something. Maybe ask around.