Honestly, BYU coaches and alumni need to call in some favors. Many say that it is better to be a FA than a 6th or 7th round pick. But, BYU needs some good pub. I believe that both Williams and Langi are very likely to be drafted in those mid rounds. However, I believe both Tautu and Kai showed extremely impressive athleticism that should have them right on the border. Not sure both will get drafted. BYU has seen a few guys lately that should have gotten a chance but didn't (Sorensen, Uani Unga, David Nixon, Alani Fua, etc.)
BYU needs the publicity of getting these guys drafted. So I thing 2 is most realistic. But, if another 2 of Tautu, Nacua and Eide could be 7th round picks it would be huge. Seriously, Detmer and Sitake need to call in favors just to get that momentum going for recruiting.