Due to scholarship limits, transfers, busts, and injuries, it is impossible to be "peace of mind" deep at every position on the field.
But the way Butch is recruiting, we should be close to it at DL and OL by next season, which is by far the best place to have it.
I think that's where his "it takes 6-7 years to build an SEC program" comment came from. The first 3-4 years, you are relying on young guys on the lines of scrimmage. But by year 6-7, you are redshirting almost all of the new guys, and a few years after that, you're in a position where you can replace an injured RS SR left tackle with a RS JR left tackle...and still have another guy behind him.