It should be possible to fit 19" on, you would probably need to use a 225/35 r19 tyre to make it work, and there seem to be a good selection of tyres in that size. Only thing is finding a wheel with the correct offset of 45, or near as damn it to avoid rubbing, and finally, the speedo will be marginally under reading, so you will be going faster than the speedo indicates on that tyre size.
I have the 18" MS Design alloys which come with 225/40 r18 tyres plus I have the Hyundai lowering springs, and there is no rubbing, and ride comfort is acceptable, even with XL (extra load) tyres fitted.
Mark