Essentially, you would be committing to an average of a game a day (three games within three days). At the end of the three days, I resolve unplayed games and award wins to the player I feel made the most effort to play the games, or grant wins on coin flips if no one is at fault. A new rule we have this season states that, if your games played falls below 60%, you will be automatically dropped from the league.
Since you can only play 3-4 games a week, there is a great danger of you falling below 60%. Better off sitting this one out and getting a feel for the league. Then, if you want to play in another season when you had more time, you would be more than welcome.