6.5 inch girth,now I need length to match

I’ve been PEing now for a couple of months and feel I’m ready to start hanging.My girth is quite big 6.5 inches,because of this I’m going to work totally on length.
So far I haven’t set myself any targets regarding length,however I would like to achieve a penis where the length and girth are well proportioned.What does everyone think my ideal length would be to match my girth and what increase in length would be realistic
My current length is 7inches nbp

Thanks

Your length should be 8” or more to match it.