I kinda wish i had gone with the 400>500 kit that 440 source has with the super light bobweight.. but i ended up in a small block rabbit hole.. maybe next time :) but that's the way i would go.
Thing is that 440 source tells me that I should avoid this as a street build because pistons are very short and less stable which will cause premature cylinder wall wear. Thats why I was thinking about differet approach towards 500ci stroker.