Well, what type of gear are you looking for? PvP gear? Raiding Gear? Just plain old Farming Gear? What spec are you? Certain specs need a lot of +crit to work well, others don't.
I use Wow-loot.com to find good gear, the class gear planner is nice, though sometimes when you change stuff around, the stats don't subtract from the gear you took off, so be careful looking at it.
MOST Outland's Instances I have done only take 1-2 hours, if you have a good group. So I wouldn't worry too much about not having enough time for them.