Show us a picture of what you are considering.
I am in So Cal where the roads are like glass cause we don't get the freezing thawing cycle. My suspension is very stiff so it is hard to differeniate what is the wheels and what is the suspension, but in an ideal world I would prefer a little more cushiness. My set up was selected by the prior owner. I can't imagine what 19s would feel like. Even if the roads are great, there are always driveway lips. That is when I think I wish I had a little more sidewall.
Dinan chip, Bilstein sports w H&R, RD sways, RD strut brace, 750 bushings, Zimmermans/MetalMasters, O.E. M Pars, Eisenmann muffler