My initial inclination is to pass on that. I would at least want the early teens first back. We need a lot of quality starters, and 4th rounders are usually "project" types, with flaws, unless a particular position is very deep.I'm thinking a team will try and trade up who are in the early teens for that LT and be willing to give us a second and fourth.
The one exception to that is the RB position. You can find servicable backs in later rounds.