I'd go with them; 19x8.5. That's a pretty decent size (from my noob knowledge). If you're gonna go for 19x9 or 19x10 even, your car will handle like shiet but if you don't mind and rather looks, then go for it. My cousin said for my car, 8 or 8.5 would be max I should go if I still want my handling to be good.
Edit: Because I initially wanted 19x9 or something higher for looks and that's what he told me.