For starters your team's vision isn't up to par with some of the better teams. You should see a big improvement in the players you can see next recruiting season. For now focus on players with above avg or sky's the limit potential. Also don't necessarily focus on overall rating, that is worthless in WIS. Focus on the core attributes for each position.
When it comes to practice, be sure you have 15+ minutes into each formation you do, including special teams. The rest to individual practice.