5 Boxing.... the warlocks are 45... with about 8 days played. I tend to idle rather than log out because I don't want to lose mage water.

I expect to hit 60 within about 12 days played and 70 within 15 - 17, depending on how much I grind and how much I enjoy the experience.

Of course, I already know all of the 1-60 instances.... and soulstones mean no running back.

Leveling up 5 characters is much tougher than a single one (obviously). Not much synergy and even with group bonus, exp is being split 5 ways.

If a highly optimized player can do a single character in 5 days /played - a highly optimized 5 boxer could do it somewhere around 10, perhaps a little less.

To my knowledge, nobody has actually optimized a multibox leveling run.