New 17 inch trims for my alterkation

Hey Guys I have been running 15 inch rims on my 67 Barracuda with an Alterkation. I want to switch to 17s to get more tire under the front. I measured the hubs on my Alterkation since it is ten years old. I got 61 inches hub to hub. I was thinking of running 17x8s front and 17x9.5 rear.(car is minitubbed). Thinking 245/45/17 in front and not sure in the rear. Setting the car up for cornering and track time. Any feedback or suggestions are welcome.

Thanks Brad