SBR'd with Non SBR Lowers together, LEGAL?

I only have 2 lowers, both are SBRd.

I want to make a 3rd rifle, can I legally own a NON SBR Lower with a 16" Upper under the same roof?

yes. No problem with that.

absolutely fine

Yes…if not im screwed

Before this thing gets out of control with a bunch of worthless respones, it’s closed.