Lucky You!
He will probably be most grateful for you to take everything ... as then he has to figure out what to do with the rest. Suggest to him that you'll do that for him, as part of the payment of his giving it to you. Especially if his plans are to give it away anyway, it's not like he's missing out on the sale value.
This way, you can get it out of there, and then take your time to sort thru it with your sisters, and determine how/where to share the bounty that you are not wanting for yourselves.