I had Merc 17x7.5 ET36 wheels on my golf with 15mm on the front and 20 on the rear for flush with very sleight tuck bringing the ET down to F21 and R16.
I had 20mm on the front and 25mm on the rear, but they were being chewed up by the front arches (double lip). Arch rolling would have cured that.
With the extra inch on your wheels and your higher offset, 20mm adaptors on the front for flush (you could probably go 25mm if you
have rolled arches or some nice stretch.) and 30mm+ adaptors on the rear for whatever amount of poke you want or 25mm
on the rear for flush.
I think 25mm Fronts and 30mm+ rears for poke would look nice.
But you will probably need arches rolling on the front.
Thats just my 2 cents though