I once used an 80B to finish off a roll of tungsten film in daylight, using a pinhole body cap -- it worked!

I have not used filters with B&W pinhole, but there has been discussion that reducing the spectrum width can produce a sharper image because the optimum pinhole diameter is light wavelength dependent. I would assume the same filter factors would apply. Because there is no light gathering or in/out of focus as with a lens, any specs of dirt on a filter are more likely to show in the photo than with a lens.

If going with paper negatives on graded paper, which is blue sensitive, a yellow filter can reduce burn-in of the sky.

I would lean toward a test or two before going. It's always nice to have a little confidence built before you're out in the field.