Well right now I'm about 68.33 and I have 6 days 12 hours /played. I will probably hit 70 around 7.5 days /played. That time is with a lot of idling, AHing, setting up macros (my first multibox group 5 shamans) etc, so the actual leveling time right now is probably closer to 5 days /played.

I skipped almost all collection quests except the ones that had single items that dropped for all 5 guys at once. Occasionally if I KNEW it opened up a huge chain or the reward was really good I did a small collection quest that required 3-5 items on each guy.

I only did a bit of instancing pre-60 - the quests with RAF will allow you to get to 60 with tons leftover even without doing a single collection quest. Post-60 in outlands I did all the non collection quests and then padded some XP with instance runs...mostly a few ramps runs, probably 10 BF runs to first boss, a couple of SP runs, underbog once, mana tombs twice, and durnholde once so far. I'm in Shadowmoon Valley now, going to finish questing here and then run durnholde/sethekk halls until honored with both factions to hit 70.

I expect I'll be 70 this week as the wife just left town for a week and took the daughter with her so I'll have not much to do in the evenings/this weekend except level