Multiples on martial arts studios

I’m working on a valuation for a martial arts studio. The SDE is $350k with a listing price above 4x. I’ve checked out the BVR tool but there aren’t too many martial arts studios on there. Based on research it looks like gyms typically go for 2-4x but I’m not sure how they compare to martial arts studios.

Does anyone have any experience with martial arts studios specifically? Thanks for your help!