Can you make a snapshot of light build?

Is there a way to make a snapshot build, a snapshot lightning build, instead of waiting a few hours just to find out that the numbers need more tweaks.

Or should i make a small level add 1 mesh and start experimenting with light settings, then when I’m satisfied i add the values to my real level. Would this be feasible?

This. Or build in preview settings to see the overall distribution of indirect lighting, then go production.