It better.
5 years is too late if we aren't in the top 3 of the SEC east by then, IMHO.All Beamer has to do right now and next year is get bowl eligible. Failure to do so would be less than satisfactory. After next season the fan base will start to expect a bit more than 6 wins. By year 5 a HC has his pieces in place and it's pretty clear if the team is stagnant or regressing.
But who can know what year 5 will bring when we're in year 2?5 years is too late if we aren't in the top 3 of the SEC east by then, IMHO.