germination rate is high, basically no matter what you do.
fresher seeds are better though.
there is a small gel-sac around each seed.
some poop it, and it might germinate a little faster
but, i leave it on.
it keeps the seed from drying out.
it might prolong germination, but, i think it is healthier with the sac
(in the long run) than without it.
i would clean and dry the seeds with the sac on
and then plant ASAP after.
or, do not dry them... i havent seen a lot of difference.