You'll be fine with 19"s as long as you get a close match. JLevi is a solid dealer. Personally I'm going through the same thing right now, but am at the end of my search. I was considering VMRs for a while, cuz I love the design, but they just weren't hitting that special spot in my heart. I eventually found the wheels that I think are perfect on TireRack and will be purchasing through them (along with tires). Total cost (wheels, tires, TPMS sensors, mounting and blancing, and shipping) is $2700. Not bad, if you as me.
But whether you choose JLevi or TireRack, talk to one of their experts and you'll be fine. Either way, make sure that e90post get's credit for the reference.