Rendering within a part "scene"

We were recently asked to render our system on a factory floor, one of the other teams in the company had a template part file of a fake factory floor, but its a part, not a scene or environment

Because of this when I try to render it, the ceiling and walls on the factory shade everything inside and its a very noisy render

I tried to apply emissive appearances to the ceiling lights, and it helps, but still very noisy

Any ideas how to get render studio lights inside a part model?

For now, Im going to blow out the ceiling tiles and make my environment an offwhite so it looks like the tiles are still there and have a few distant lights above and see how that works

Thanks!