I recently sold a set of 6/4 pots to a forum member, and I'm sure he's going to be watching this thread closely to see if the stock wheels will fit with 10mm spacers.

Pay close attention when you mock-up the spacer that if fully seats against the rotor. None of my larger spacers (15mm, 20mm, and 25mm) fit properly up front, but my 5mm spacers do. Hate for you to install the spacers, find out they don't fit, and then get refused a refund due to scratches. On the other hand, if they don't work, put them on the back and maybe 5's will work on the front. If you're going to space the fronts out, have you considered moving the rears out to match?

Have you checked fitment on the rears?