Beards and extra toes are likely, as they are incompletely dominant and dominant genes. However, if the silkie carries copies of the not bearded or no-polydactyly alleles, some of the offspring will not inherit these traits.
This is Battle Hen- her mom is a black silkie, and her dad is a SLW x black sex link mix. She's midway between bantam & standard size, with black skin and all the other silkie features except the silkie feathering, obviously. Picture isn't great, but she was not in a cooperative mood today, for whatever reason.