I might be interested in the Katanaka sniper and Johanna depending on price, but I have nothing on your list of wants. Would you be interested in just selling them?
Summoned models gain the slow condition, in addition they are not allowed to take interact actions the turn they are summoned, no matter how many AP the action would cost them.
I have just sculpted some out of clay for my girlfriends Raspy crew. Going to post some pictures of them when they are painted, they were quite easy to do.
Unless you get old crew boxes with cards from the previous edition of the game, then you dont need the arsenal decks. There are however some shared upgrades that are only contained in the arsenal decks, which is a bit of a shame if you ask me.