Cragars and sizes

Forgive me for starting another thread on this probably tired subject, but I am officially confused, or vapid. All I remember reading the past few years was Cragar stopped making SS rims in the small bolt pattern and about how scarce they are. I found Summit has some so I called about sizes and was told they are getting some this month, others next month. I thought how could that be if they stopped making them, so I called Cragar. A lady there told me what they have in small bolt pattern and acted like I was crazy when I said I thought they stopped making them. So I guess they make them again?

Now the next tired part. I have drums all around and an 8 3/4 rear. The car was built in the late 70s/early 80s and i want to keep that street look. Any thoughts on the front and rear sizes to get hoping for skinnier in the front and wide in the rear. What would the widest be for the rear keeping everything as is. I am not overly familiar yet with back spacing.

Thank you