Brock B1 on the Vento ??7.5 or 9×16??

HI now wants to buy me rims soon. Do not think the Brock B1 forn Vento is bad. so my is not very much done just at the front, and lower he should not, raised VR6 lip (if that looks like) Well now I don’t know if I can afford the 7.5 front and 9×16 rear or both 9 x 16? Do I get probs when I hit 9×16 with 205 tires on it? BZW Do I get problems with 9×16 at the front with 195 tires? Why do I do my own many front 7.5 and rear 9×16 on ? is that often not different ? I don’t want to have forgotten deeper, but would that be possible if it were 40/40 lower ? So 9×16 round ? Maybe pictures still someone there?