Sounds to me like you're looking for the hellaflush stance.
I think your car looks perfectly fine.
I use a 17x9, with a +44 offset...... and I had to roll my fenders significantly..... and I have run a pretty aggressive camber to clear the fenderwells.
18x9.5 with a +38??? You will rub..... a lot. You will absolutely have to roll your fenders..... probably even pull/stretch them a bit
I can also tell you that when you go that wide, you have to go extremely low, otherwise your car looks like a 4x4.