About that time 470,500, or 512

I knew I was going to get the block comment and that's ok.
Love to have one but don't have the cash and if I could buy one it would be a waist of money to not go aluminum and 4.50 bore and maybe 55mm raised cam. At that point I don't have the heads for 4.5 bore, ect, ect.
I will keep the tune low. I really don't want to make more power that I can plant so I will tune up or down accordingly.
I am looking at cyroing the block and I have arguably the best aluminum cap system. My heads are on the small size but can do the job.
Thanks for all in input guys.
I think I am going to do the 470 because it gives me a bigger window for piston compression heights and rod lengths. On the 500 and 511 you can really only run one rod the 6.535 or shorter because the comp height of the piston gets too short.