Sites that allow you to set the end of your season?

[Great Gazoo]

My league is adamant about cutting our season short, so that the playoffs start in the beginning of August and end at the beginning of Sept. We play in a Keeper(although not a reqirement for site) H2H 15x15 and a portion of the league, people with no chance in playoffs, starts to become disinterested around this time. Does anyone know some well run sites that allow this option. Pay leagues are acceptable, but the site needs to be easily navigated with strong updates, MLB teams daily lineup shown before first pitch, and optimal live scoring.

[Great Gazoo]

Bump