My suggestion is to check the GM introductions, look at the listing there and find GM's that are available in your time-frame, then look for the GM's on your list to post quests on the calander, sign up for those.
I am in the mountain time zone, and all my quests will begin roughly around 8PM pacific. Rarely earlier, but sometimes later. I plan to do one scheduled quest each week on thursdays, and possibly an impromptu quest if the mood strikes me on one other day of the week. The weekends are my play time and my family time, so I won't be running anything on saturday or sunday, but theres plenty of other GM's that take up the slack there.
Sign up for the quests I run, and I will try to fit you in. I do alright with the group so far, but I am trying to stick to my limit of 15 people per quest untill I get a bit more adept at group management. It's hard to include everyone in a group that size and still keep things moving along, As I get more skilled at it I will loosen the cap on numbers, and probably dial my quests in to be a bit more level specific.
Thats about all I personally can do to help ya, hope to see you questing soon.
Vyris