What off set to go with on some 17x9?

[GsXtUrBo98]

I am thinking of going with some RPF1's on the evo and was going to do 17x9 but am unsure of what off set to go with? I know that Mike wants me to go with +25 and I saw that Matt D went with +22 but I dont want to roll any fenders or have any clearance problems.. For tires I will be going with 255/40ZR17's star specs just so everyone gets the big picture.

Thanks in advance.