I think OT will be the really tough one. From looking at several mock drafts there may be as many as five Ots taken in the first round, all before we draft. There may be three or more LBs taken in the first round, which is unusual.
The good news is, because of the above, only one or maybe two DTs will be taken before we draft. This is also unusual, and this draft is deep with good DTs. Earlier I mentioned DT as the most crying need. Quinn Pitcock retired, and one starting tackle (Anthony McFarland) suffered a career ending injury. The other starting DT, Ed Johnson was arrested on drug charges and released from the team.
In addition to the six on your list two underclassmen, Sen'Derrik Marks(Auburn) and Gerald McCoy (Oklahoma) may declare. Please evaluate these two. If they don't make your list we will list them as seven and eight. I wonder how many of the eight, project as at least second round picks.
I think if we use two of our first three picks on DTs the Colts defense should be dramatically improved. It's much easier to play CB when the opposing QB is lying on his back. In any event, it will be your list I submit for each draft pick.
I agree with your assessment of the RB situation. Adai was good his good his rookie year, it's been down hill since. We could get a very good RB in the first 3 rounds because they don't seem to be a real hot round one commodity.
The same should hold true for OG and CB. We may end up with a great draft despite drafting so low. I hope the real colts help us out a bit with some free agents before the draft.