My WW jungle clear time is at 3:55. This is level 4, full hp, longsword and quite possibly higher level than the bot lane for a few seconds. You could use that as a base.
My runes for him are: 8 AS red, 1 ArPen red, 9 Armour yellow, 3 ArPen quints, 9 mana regen / lvl blues.
Masteries are: 16 0 14
I've actually been kinda skeptical about the standard jungle path these days though. For a lot of reasons.
1. Literally everyone and their mother likes ganking the jungler when he starts at blue. However, they barely ever actually steal the buff itself. So why should I place myself at danger by starting there?
2. 70% of the time, there's nothing for me to gank after completing the standard route. You can bet my teammates pushed their lanes all the way to the enemy tower or everyone is at full health. Isn't it better for me to just go all the way to level 6 instead of wasting my time roaming around trying to find an impossible gank?
3. The standard route is really really unoptimal for farming. The minion camps will spawn at weird times because of when you completed them.
Thus, these days I've been fiddling with other jungle paths and thinking of what kinds of pathing to use depending on the situation. I'm actually quite fond of my Lee Sin path. It's small golems -> wraiths -> wolves -> blue golem -> pill -> small golems -> lizard.
This gives me the chance to either gank immediately with the red buff or continue farming jungle without any idle time.