I used some cheeper stuff off ebay and my Cupra fogs are really curved also and they where a night mere to wrap took a good few attemps and am quite good at it lol.
I would agree the problum is the fact that the film is too thick unlike normal vinyl wrap.
What if try is buy some cheeper stuff with some extra for more attemps and get it as close to the edge as possible then hide what u carnt under the grill