[@DestinyStar] Sorry about the mass of calculations and blah.  I guess I was just trying to give you a feel for the numbers/time ratio involved.  I think that Kirito got as strong as he did because he focused on completing a bunch of quests as quickly as possible and knew where to train.

Still, as I said, it ultimately comes down to your gut feeling.  I forget which floor Kirito fought Kayaba on but I recall a mention of him being between level sixty and level seventy.  I can't remember what level he was at when the first floor boss was defeated so I don't have a frame of reference for floor one levels.  I'm just having to draw on general gaming experience.  Although, I wrote earlier that level two monsters stopped giving Tailpin any experience after he hit level 11.  Level fives, like the bears in the forest, could probably get you up to eighteen or so before tapering off if that pattern held true.