What brake callipers for a Raleigh Winner

Hi this is unrelated (kind of) to this thread but as I have just joined I have been informed I need to add to three threads to verify my authenticity :-p

I have a raleigh winner that I am in the process of converting to fixed. Can anyone recommend a decent wheel set with flip flop hubs please?

Thanks

I to am in the process and would love any info/help regarding rims and bottom brackets!