I have 18x8.5's with a 0 offset inside 285/60/18's (31.5"). I also have a 2" lift. I was planning to step up to the same tires you mentioned as well. To do that I will need to lift another 1" or do a lot more hacking - or possibly both. Keep in mind, the width of the those wheels. My 8.5's stick out already (even with the lift) and yours would stick out another 1/2" past mine if you go with the 0 offset. Not that you have seen my VX... but you might want consider a thinner rim. If -19mm offset moves the wheel inward you might be inline with my 8.5's or even better, but if it moves the the rim outward you don't want it, IMO.
Sent from my "two hands on a keyboard"