I think we can play with the LBs on the roster now. That's not saying we couldn't pick up one or more in FA and/or the draft.
You have Lee and Carter as two of the LBs. Lee is the Mike. I'd play Carter as a Will but he could play the Sam. For that matter so could Lee. I can easily see Lemon or Albright playing the Sam esp Albright. Or you could put Albright at the Mike and Lee at the Sam. I'm not saying that's where I'd play them but I think they could play there.
I think there is a lot of talent at LB on this team right now. I think some are underestimating the talent of Lemon and Albright and I think Sims is a player as well. And I have no idea how good Wilbur is but he is a player I expect will develop and push for snaps.
Did you know there are only 5000 Snow Leopards in the wild now and they are confined to Central Asia? However, the effective global population (those likely to reproduce) is less than half that number.