I'm going to be rewiring that entire room with new 12 gauge wire, and putting in additional circuits for the HT, so those old boxes will be going away.

As an aside question. Is there any reason to even have an exhaust fan in a bathroom, that only has a toilet and a sink? I'm guessing not. I think the exhaust is only to exhaust any steam and water vapors coming from a shower. I have one in the upper bathroom, but I never use it.