Since you need a SF I would make Valle into a PF that can play inside SF at times. I would get that OD up to 10-12 then get alittle driving and passing then pound big skills. You can add more OD later in his career if you want a SF but if plan on a PF for his final OD goal of 9-11 would be fine.
Your arena looks good just get some lower tier and you have a D3 arena on your hands. I'm not very familial myself with D3 talent. I know more about D2 and NBBA because of the off-site but not much D3. All the D3 teams on the off-site dominate with young talent and only stay for a season. I just don't feel like that's realistic since they have a finish arena, tons of cash from tanking, and great trainees.