A/C Hose Routing?

I just looked at some cars in my yard.
64 signet, 64 Valiant 100, 65 Valiant 100, 66 Signet, and 66 Cuda, no dimples on any of them. Some have any where from none, to three, to four of the large flattened "spot" that you show just below the seam. I wouldn't be too concerened where you put the holes, as long as they don't interfere with anything else, and you have easy access to the fittings.