Depends how much you lower it and what camber you will be running etc. to be honest. If you can wait until the end of the week, I would suggest fitting the suspension and wheels, settle it out and see how it looks. An offset of 30 isn't overly aggressive nor is it tame so a 20mm hubcentric might give it that nice aggressive stance but as above, if you have it lowered a long way down with certain cambers, you might find problems. I would fit it all up first and see how it looks personally.