As a conj getting gold solo was harder then any other class. Getting a group would be ideal.

/sh LFG fates works for me, it you want to be creative go for it. If I'm lead I just right click invite anyone I see in chat.

Average is 1 hour/level for me in fates (less I think at lower levels), now this will depend on your level and the fate level as well. Being close to the fate level or a couple levels above is best for xp. I did 20-30 in Quarrymill and 30-38 in costa de sol. Those are both heavy populated (at least on my server) and you'll have no issue getting crazy xp. Use some food for a 3% xp buff as well.