Light painting with film?

I just decided I would break out my old Nikon N65 and shoot off a couple exposures with a roll of Kodak BW400CN film. I want to do a couple light painting shots with this roll, and I've never really done them with a film slr before, only digital. When I take these, I'm thinking about setting the camera to S with about a 2-3 second exposure, but I was wondering about the aperature, can anybody help with some advice?

Try 2 through 15, depending on the light

Yes, some people ask about light painting. Photography really means light writing. But, use a low ISO film and a tripod. With wide aperture you won't easily get everything into focus, but you will need it not to get too long exposures. Use a range of different speeds for bracketing or check with your digital camera

If you've done it with digital, it is no different with film. You can just see the results faster with digital.

A medium aperture, f/5.6 or 8, will do what you want without requiring precise placement for depth of field.

I've done a lot of light painting on still life shots and frankly it's trial and error I found that if either the room or outside night is dark the longer exposure the better, so stop down all the way and take your time with the camera lens open, I would shoot on 10x8 film and have the shutter open for maybe 10 minutes while I painted light here and there. The best way is to set your digital (if you have one) to the same iso then do some tests.