polarizer – Photographing paintings, what light mods to use and what how to set up linear polarizing filters?

I need to photograph a painting for archival purposes. It has some texture, but not a lot. I have a linear PF for my lens, but I think I need the LPF sheets/gels to go over the strobes.

Question: Do I use basic reflectors or barn doors and attach the filter sheet over one of those to get rid of glare?

OR

Do I use a softbox? (I guess with a softbox you can not use LPF?)