While we've seen it done at times, we've also run into issues in the past with 18x10 setups on the front. We give a recommendation based on providing a guarantee that rubbing won't occur under just about any circumstances for that wheel. It may be possible to pull off an 18x10 square, and for Roush Mustangs that actually came with these wheels from the factory they had Roush steering stops to reduce the turn radius and avoid contact on turns. For most of their 18x10 wheels for clearing the front Roush does advise this as well. I'll include a link below:
https://www.americanmuscle.com/roush...ack-stops.html
The best bet for clearing with an 18x10 square setup would be the steering stops, and the best bet for the tires on an 18x10 to clear would be a 275/40R18. Each vehicle does respond to the suspension and other mods differently, and that roots style blower you have on there will bring the front down a bit more with the added weight. We recommend test-fitting wheels and tires for clearance prior to installing. Ordering one for test-fitting is what I often recommend for similar situations.
Regarding the offset of the deep dish wheels, the lip sort of gives it a more concave look though the "spokes" won't go in by the same distance as the non-deep dish wheels, just far enough to provide the same offset. It would be possible to fit 18x9 square, which would allow you to do a 265/35R18 tire square if you wanted.