ah i only asked because you asked about light distancing and i’m an LED user who’s a new grower myself but been helping others for a while and done quite a bit of research.
i have a future lighting 300w LED panel with almost identical specs and the recommended distancing for a 300w reflector like that is generally 12-20inches depending on what your trying to accomplish light training wise but at that stage i’d be looking at keeping the light as far as possible while minimising stretching.
if unsure keep the light further though, easier to fix stretching that light stress and it’s easy done with LED.
I’ve stuck with those guidelines and have had good results so far