You may have given up a little much, but overall I like what you did with the trade; if possible I would've gotten a better RB than Felix. I'd try to look for a decent backup once your TE gets on his bye week.
Maybe do a trade if you want, but I think Sanchez and Stafford are enough so maybe dropping a player could be an option. If anything, trade McCoy and Hunter (or Moore) for a better back up RB (or WR), then pick up Jermaine Gresham if he is in your free agency.
Any help would be appreciatedviewtopic.php?f=18&t=503776