Its ironic, I read your post and thought back to when I was 18 and my buddy bought a set or Crager SS wheels from Jegs... they were for his car but they didn't fit, the holes were just off enough that they would not go on the car and when he complained to Jegs they didn't have anymore in that size, so they gave him his money back and let him keep the wheels. He and I shot straight over to Sears Hardware and grabbed a drill bit that was just a tiny bit bigger than the lug hole and "wallowed" them out until the fit on the car
It was kind of crazy actually now that I think about it, but at that point they were $9 wheels (the cost of the drill bit)... so who cared if it worked, but it did! Took a couple ounces of weight to balance for sure, but they DID work.
In your case you have a wheel that IS the same pattern but just a bit smaller bore hole. You should, with a ton of lubricating oil be able to buy a 14mm bit and drill through those, yes. It "should" work, it may take a bit more weight than a stock wheel would, but it should work.
That said, if it doesn't, you have to be prepared to potentially ruin the wheel - or, IF it's recoverable, be ready to take them to machine shop or wheel guy to have your error corrected, if you really want them.
But yes, you "should" be able to do it.