How about slotting the holes?
I have changed the wheel patterns on many wheels by welding up the hubs (change # of holes) then redrill them, same with aluminum wheels( you should heat the aluminum to about 300*-350* before wheling). I have added a second bolt patern, and I have slotted the hole to a bigger or smaller patern, and then you don't have all the holes to show.

Just another way to do it.

Pat