Use a 10mm or 12mm in front. They are typically stronger. The 23-25mm offset you end up with will not be a problem.
In the rear, I don't think you could even see a 2mm difference? It certainly won't make a difference in the handling.
Hope that helps.
Dinan compliment of stuff plus PF rotors and RG63s. Enough for now.
Why, yes. I am an abrasive bastard.