A few thoughts:
-Don't use flush mounts for anywhere that requires sustained lighting, especially in a high ceiling. They just aren't sufficient. Okay for a hallway or porch area, where lighting need is brief. DO NOT use this in the dining area. Definitely need a chandelier here.
-for the dining chandelier, look for one where the openings are at the bottom rather than the top or just one where the light shines out from everywhere. You will get more light for the same wattage.
-definitely replace the bathroom lighting, or at least use frosted bulbs, for a less cheap look. Actually, the best position for bathroom lighting is on the sides of the mirror. No shadows are cast that way and the light is brighter.
-you might want to look into full-spectrum bulbs instead of yellow or cool white. They give better quality light, and while still on the white side, they don't glare. Available in all kinds of bulbs.
-I have a number of older ceiling fans and they perform way better than the newer ones. I don't know why, maybe the tilt of the blades is different? I have found the newer ones to be virtually useless for actual cooling, regardless of the speed. So you might want to look for some older used ones if you care about the function vs the look.