Safety Position

Hey guys, I'm looking at IDP players in my fantasy football league, trying to decide on a safe, box safety hybrid linebacker type player. I have a lot of upside, but I am looking for a guy that can rack up some tackles.

I am considering Lonnie Johnson. Sounds like he's a physical specimen, with the opportunity to play the lower box safety type position opposite Justin Reid? Am I correct on that? I remember seeing a headline somewhere stating the Justin Reid will be moved to more a high safety position so he can see the field better this year, any truth to that?

Also, Eric Murray is still on the roster, but he has never been anything special, has he?

Thanks in advance, and good luck this season. Lot of turmoil around your team, hoping you guys can figure it out.