Here is a potential Rams starting OL:
Jackson. Because Boom’s ability to stay healthy is a concern. And a trade or FA would be too costly.
FA or draft pick. Probably prefer a solid but experienced vet for leadership, like Alyo suggested.
Schmitz (draft pick). Because I think he’ll be a day one starter over even the experienced Shelton. And a potential future All Pro.
Anchrum, Bruss, or Brewer. Surely ONE of these guys can play at the NFL level, right? RIGHT?
Hav.
I think that could be a SB caliber OL with some quality backups for injury insurance.
Rams could get away with a mere draft pick IF they’re willing to gamble that one of their OG candidates could be that LG. But after last year’s injuries AND seeing what superior OL’s can do in SB do they really want to take a chance?