Ill just put it this way, for performance mods...nothing will ever match the bang for the buck factor with a tune. Plus any other modifications you can do such as an intake, intercooler, cat-back exhaust, catless downpipes wont really add much hp if its running through stock ecu. Tunes are made for the mods, but really the engine itself has so much potential with a tune, you may over look any other mod. I would reconsider any mod before a tune/chip.
you can also uninstall tune/chips if you are afraid of warranty work
your car looks great! i would black out your trim and grille