Ruiz is a legit option at 26. Really good player, young, good size and athleticism. He shouldn't have any issue anchoring. I'd prefer to get Cushenberry or Hennessy later, because I think both can be quality starters, but if Miamo went Tua, Thomas, Ruiz, I wouldn't be mad at all.
The way this particular draft breaks, if I didn't get Reagor at 18 or Jefferson at 26, I'd probably kick WR down to the 3rd Round. At 39, Mims and Ruggs will be gone, and the other guys I like a lot (Bryan Edwards and Tyler Johnson) should be there in the 3rd or 4th. I'd prefer to add one of Reagor, Jefferson, or Mims at 18 or 26, depending on what happens with the OT's, and then see if Edwards or Johnson make it to Day 3. Around that, there's still room to add OT's, a Safety, a C, and a RB.