Really appreciate and value it.
Tough question. Ultimately, as I develop the board further, I'll add a "trade line" (players above the line would be selected at #13 if still available, players below - might look for a trade).
If all four of those guys (Delane, McCoy, Lemon and Tyson) were all there at #13 (and all four check out medically), I think I would be willing to entertain a trade back 3-4 spots for the right price, though I'd probably regret it a bit if it meant losing out on both Delane and McCoy, who I view as the clear top CBs.