Seeing Woten several times this year, I think he's a good choice at heavyweight. I don't know anything about Tanner, but I know Woten took second last year and a lot of people I talked to thought his semi-final match this year with Caylor really should have been the finals match.
Personally, I'd be pretty comfortable putting him on the mat with most heavy weights. He's pretty athletic at 215 and if 235-245 is his natural weight, I'd put him in the line-up. My reasoning would be that at the big weights you have Nowak, Woten and Tanner to choose from. Of those, I would say Nowak (3x placer-twice at HVY) and Woten (2x placer) have the best resumes. That's not to take anything away from Tanner. It sounds like he had an amazing season. I just think Woten had the better career and has the athleticism to overcome the difference in weight.