We had a Baroque Oper (Haendel Hercules) performance with our conservatory two weeks ago.
The conservatory tonmeister recorded us with a 50cm DPA 4006 130V... I couldn't tell the 130V, but the harpsichord right in fornt of the mics sounded great...
So this might be also an option.
I agree to almost everything Peter said before (basically do a max 2ft AB), and although I like him very much, I wouldn't even dare to dream taking the Neumann, since one of the features of Baroque early music is the distinct sound of the instruments, and THE feature of every Neumann record I have made or listened is, that it sounds like Neumann, whether you like it or not.... I would be more happy with the mk21 or mk2 (probably s or h) or the mentioned DPA. Try to rent them or test them.... Alternatively the expensive Gefells, although this is hear say. But those test files on the net sound neutral to me.
I would suspect earthworks to be too noisy for a small ensemble like that, from the recordings and demo files I have heard with them. In my opinion, their noise level is equal to any measurement mic of that size, which is too much for chamber small ensembles music.
Have fun!!!! Early music can really rock!
Best
Leif