This is what I have for the defensive line right now going into 2018 and their grade and weight, assuming no weight gain (correct me if I'm wrong on any names here or if I'm missing anyone). Names in blue denote incoming commits:
Atkins (Sr, 275)
Brouse (Jr, 265)
Freeborn (Jr, 255)
Murphy (Jr, 289)
Okounam (Jr, 290)
Steer (Sr, 260)
Thomas (So, 289)
Pace (Fr, 265)
That's it, folks. That is your defensive line from what I can tell. Can they move over some OL players to become DL players? Perhaps. Perhaps convert some LBs to DEs. But if you want to tell me that we're going to be able to have 8 line players on a 2-deep and pray that nobody gets injured, etc., well then you had better do an extremely good job of selling me on the idea because I'm not buying it right now.
The BIGGEST area we need to address in the off-season is DT for me. Whether that's a JUCO route, or a ready-to-play recruit, or whatever. But if it was tough to play a 4-man front this year, it will be almost impossible next year...