Moving the electric boxes down is really not that hard, it would be worth it IMO, and you already have touchup/painting to do so it's not a stand alone fix. large fixy=tures would look better but they will still be too high in current spot most likely! You have a nice vanity it deserves to be surrounded with great lighting,

if you want to keep the placement then i think you need a larger scone with more length. you have good lighting with the recessed lighting so those are more for looks and the scale is off. nice looking reno!!!

Can anyone recommend a larger sconce that would look better? The other side of the bathroom is a tub & this light above

These are the matching sconces to the light above the tub... thoughts ?

I think you need to get your mirrors in before you make a decision. This is like asking someone, "Are these pants too long for my husband's legs?" when your husband is nowhere around! If you have very short mirrors, yes, this is too high. But if you have ceiling height mirrors, maybe these aren't too high.

I suspect you'll find you want hanging sconces rather than perched (down instead of up) but you may not like the ones you have now. with this restriction.

In either case, put together the room then make a decision. Things often look odd by themselves but good in a group. Good luck!