Please post the rosters of both teams and the rules for your league. You do want Nicks, but maybe there's a better deal to be salvaged. Then we can sift through your options ...
Hardesty is a garbage throw in - unless this is a dynasty? His value is highest for owners of Hillis. This is basically Nicks for SJax and LLoyd.
Personally, I'm on the fence about Jackson. He's often injured. His team often plays from behind (limits carries). But I agree that he's a much better option to have than Felix Jones - who is anything but stable - making him more of a flex this year rather than the hyped break out candidate he was drafted to be.
I'm also a little worried about Lloyd. I'd definitely cash in on his value - but you may be giving up a little much. Denver's QB QB could get a little hairy; how much value to Denver's deep threats hold if Tebo is chucking the ball?
take a look at mine?viewtopic.php?f=18&t=501785