I'm running 18x9 +39 w/ 265/35r18 4S. I just put that in a calculator compared to 265/30r19 and it says you'd be .08" closer to the strut. I'm pretty sure I have a lot more than .1" of space between the tire and the coilover, which is already gives a lot more room than the stock struts/springs. So you should be fine.
My issue with the FA's is they ride like 1" lower than mountunes, even at max height. Top of the tire is tucked under the fender. Even at max camber with my setup, I was rubbing the fender and the fender liner itself when wheels were turned. FA was able to modify the front coilover bodies to add 40mm of length, now they sit a hair higher than it did with Mountune springs and all rubbing issues are gone.