Interesting stuff this.. I have a few projects my self and i found that the plants who show a lot of the genes from mazar i sharif have HUGE seeds like you are talking about. they also have huge dense buds. germ problems, no notice of it. And as you probably already know it the difference between sativa, indica and afgani, small, medium and large.
In this case I am looking forward to the Afghani seeds. Big and beautiful.
Peace