I think in your case, you would want to avoid the "stick on" elf ear tips, such as the ones sold by Aradani. It depends on the positioning of your piercing but my friend had a similar thing and I know that stick on elf ears would not fit the same over a bar.
Have you looked into the headband style ears? You do need some hair in front of your ears to conceal things but this would not bother your piercing either. Here is a link
to the ears Yaya sells, and there are also big ears
like for Lodoss elves. If neither style works, at least you have an idea of how to construct a pair.