Use foam, MF pads clog up easily as it is. Add in tons of paint transfer and you'll have to clean a ton.
Btw, I hope you're prepared, single stage white is probably the worst thing in the world to polish. The ones I have done have been harder to polish out than any other paint system I have ever encountered on a car by a mile.
I believe it is because whatever the white pigment itself is made of is an extremely hard material.