The more I think about Sam's options, the more I think the portal option is risky. The portal could kill his chance of going pro. The obvious possibility is that he could get injured. He's currently healthy, as far as we know, and therefore best positioned for his Wake pro day and the combine.
But another possibility is that he goes to Florida or Notre Dame or wherever and doesn't perform well. He has been part of an offensive juggernaut for the past 5 years. Two of Wake's previous 3 QBs are in the NFL, and the QB that isn't is the one that transferred. He's been in a pass-focused offense with some fantastic receivers (Dortch, Washington, Surratt, Bachman, AT, Greene, Banks, Roberson, Morin, etc). He might not put up nearly the numbers at another school like he did at Wake. And if he stumbles a bit at another school, their coaches and fans might be quick to move on to another recruit.
Florida just got waxed by Oregon State while scoring only 3 points to end up 6-7 on the year, and Notre Dame lost to Marshall at home early in the year. I'm not sure a grad transfer QB is really positioned for success at either of those programs, and there really aren't many programs where success is extremely likely. It's hard to learn a new playbook and teammates and have immediate success.