I have a two-sink vanity. My light fixture (that is the glass shade) will "end" two inches above my mirrors, but I'm wondering if I should drop my mirrors another two inches. My medicine cabinet mirror is 20"by 26" long, which is really not long enough but it's the best I could find to work with everything else. So my three light fixture, which is 24" wide, is much higher than 72" off of the floor, it's more like 78" off the floor.

My builder and I had this discussion yeasterday. Most vanity lights are placed atleast 6'3" to around 7'. Partly depends on the size of your lights.(He had me bring the print out of the lights I ordered with the sizes) Also have to account for hieght of user.(Planning for future growth of my 14 year 6' son in his bathroom)

You definitely need more lighting as stated above. Our family room is similar to your room and our fan light has 4- 60W equiv LED's (topside) plus 3-40W equiv LED's (downside behind glass) and the illumination is just nearing adequate for general low-level lighting. The fan circulation will do best hanging from the center of the room, and IMO, that is the priority location for a fan/light combo. Do use a long down-rod, our 6' down-rod places the fan at about 10' and it circulates well.

Hanna I am running into the same issue with the lighting—particularly since my bathroom is modern. What did you end up going with and did it work out? I hope so