My old 19x8.5 was a 35mm offset, but I may just go ahead and bite the bullet and run with a 22mm offset. I want to run a rim that isn't on a 7th gen accord but that is kind of hard to find.
Being super low doesn't really have any performance benefits. Sure, it looks good to be slammed and have great wheel fitment. When it gets in the way of every day driving and you can't enjoy driving your car, it's pointless to be really low. I don't think there's anything wrong with the ride height as it sits right now.
What 18's are you planning on getting? What are the specs of the wheels you have compared to the 18's?
I was think along the line of 18x9 all the way around.
My 19's already rub, but I'm switching to 18's and I plan to go a little bit lower. With the lip kit I don't plan on going low, and with a 3 inch exhaust rofl!