My draft thoughts would have an ILB in the first three picks depending on how and if they fall - Mosely, Shazier or Jones and a corner back - Jean Baptiste, Desir or Watkins, but my third choice may surprise you.
I don't think center Montgomery was signed to be a starter, but to allow Ramirez to return to guard - where I'm not sure he'll be guaranteed a starting role either.
Fila, Yankey and Thomas have been mooted as a starting LG, but I don't think the FO will go that route, unless the draft goes badly with other choices.
Elway has suggested Garland as a LG contender and I don't think he has done this without reason. I think he and Ramirez will compete for the position, which brings me to Center.
Drafting Travis Swanson (probably in the second round) would give the Broncos a real talent that could compete with Montgomery for a starting role possibly now and definitely in the future.
Our OL nine would therefore be:
LT: Clady (starter), Clark (backup)
LG: Garland/Ramirez (competing)
C: Swanson/Montgomery (competing)
RT: Franklin (starter), Justice (backup)