Assuming you keep the rolling radius the same or as close as possible to factory spec, larger wheels will require a shorter and stiffer sidewall, therefore a theoritical harder ride. How well the suspension soaks this up will be the job of the shocks/dampers, so you could consider fitting adjustable ones to compensate if you are that concerned.
In reality though, I doubt the difference will be substantial enough to worry about. Maybe try to borrow a set to see what you think?