First of all, there's no sense in talking about a "national title hunt" until at least week 6 or so.
Second, you've got to find someone to put in the top 5. I don't think there's been a comparable year in my lifetime in which so many elite programs had such major problems in the off-season-- new coaches at Michigan, Florida, and Ohio State, allegations and suspensions at Miami, etc. Texas is coming off of a very tough year. USC is still on probation. No one really knows what to expect from Nebraska in the Big Ten. There is a lot of consensus around Alabama and Oklahoma, but after that I don't know that there's a team that anyone could guarantee you will win 9 games or more.
Third, there is a real sense that Florida State (having gone through there big turmoil last year with Bowden's retirement) is terrifically poised to fill the Florida vacuum. It got pretty bad during the last few years of the Bowden era in terms of attention to detail, etc., and they were kind of a sleeping giant. They've recruited well, they have a great coach, they have a lot of starters back, and even though they lost Ponder he was hurt so frequently that Manuel has experience.
Would I be shocked if they stunk against Oklahoma and ended up winning 7 or 8 games? Not really, but I also wouldn't be shocked if they beat or played close with Oklahoma and ran rampant in the ACC. Just a weird year to predict.