I added some more information in my previous post.
As for the short brass...
Hell yes. Load them and shoot them.
Load a couple up and see what kind of crimp you get on them. You may get enough that it's of no concern at all.
If you don't, keep them separate, and load them with the crimp die down a quarter or half a turn.
Or, trim the other cases to match and load them all the same.
If that fails, send them to me, I'll give them a good home.