I don't think you should ever wait on OL. Waiting till you're winning is a great way to never start winning.
Look at Leach's first, patchwork class ('12). Yea, Villarubia & Denzel Dotson were wastes, but Salmonson contributed a bit, Flor filled in very nicely while Sorenson was out and Middleton was a multi year starter and a pretty good one at that. Given the chance, I bet Leach would take that group again just to have Middleton.
The next class, after a disastrous debut season, he landed O'Connell, Madison & Riley Sorenson.