You can reasonably get 5 characters up to level 80 within the 2 week window without a problem. It should only take 120 hours max (if you're instance grinding)... let's run some numbers:

120 Hours = Goal (5 chars at 80)

Total Days to attain the goal = 14 (2 weeks)
Total Hours Available to attain the goal = 336 (14 * 24 hrs/day) [this is our upper limit, unless you know how to get more than 336 hrs out of 14 days ]

120 Hours / 14 days = 8.57 hours per day

So the question is, will you have that kind of time available to play?

At this point I would argue that instance grinding is going to be the fastest possible way to 80. Quests will be impossible due to the abundance of people doing the same quests as you (remember when TBC came out?)
Quests will probably remain the absolute SLOWEST method for leveling for the next 1-2 months - only because of the over abundance of players trying to do the same quests (good luck doing kill quests with 200 players in the same zone as you/ minimum around the clock).

So back to instance grinding...

Let's go back to your original goal of 4 - 7 day weeks.

so now -> 120 Hours / 28 days ... that's a mere 4.28 hours per day tops.

Also the 120 hour factor doesn't figure in rest experience (which you should have atleast from 70-71.5)


Is it realistic to get level 80 in 2 weeks? Very. Is it likely? Depends on how much time you have. 4 weeks should be the maximum it'll take you to get 80 though...


RIN