Good on you oli 
If these were in 5 stud i would defo buy some 
How hard/expensive is it to convert to 4 stud ? 
For now, if you wanted some, the easiest way to do it would be with some 5x100 to 4x100 adapters. Extra cost but a simple bolt on and go.
I've also heard that there are companies that can redrill them. But I really don't know much about this and the cost.