I was a little skeptical of the STA guys lack of offers as well but their video looks solid. They might not have the highest ceiling of our OL recruits but I would bet they'll have the highest floor. They've played at an elite HS program where football is year round and recieved top notch coaching.
Looking at a guy like Evan Adams you might argue he has a higher ceiling but a lower floor. He appears to have many of the tools to be a really good tackle for us. He has size, good feet, and a mean streak. There are many variables that will play into where he ultimately ends up as others have mentioned.
I could be off base but IMO, you look for a blend of guys (high ceiling, high floor) as you truly never know how these kids will develop.