Pros-

-Shield helps keep you alive early on in jungle as well as helps keep teammate alive
-Great tank killer
-CDR allows you to almost continually use your moves

Cons-

-Very susceptible to damage
-Cannot initiate
-Not a capable Duelist

This build focuses mainly on jungling. You would start off as most junglers do and get blue buff. Get whoever is top to come aid you in doing so. After you get that, head over and kill the wolves. Then over to Wraiths, then you ftake out the golems. At this points, you may want to go back for health and items, but if you feel courageous enough, you can try to take lizard. It is best to start ganking around level four when you pick up sonic wave, as it is a good way to transition into your E. Alternatively, you can have an ally initiate, then safeguard over to them, then transition into tempest/cripple, and finish them off with Sonic wave/resonating strike if they haven't died yet.

Smite is an obvious choice for jungling.

I chose ghost for escapes and quick help in ganks/team fights.

Now for skills, I focus on Safeguard, as the boost in lifesteal is critical to survival in the jungle. It is a very great skill for saving a teammate from ignite or heavy fire or ambush in a teamfight. The spell vamp and armor make you much tougher, and the shield could save you from towers. The spell vamp and lifesteal can alos be used to get a bunch of health after a tem fight dies down from a jungle mob.

Tempest is a skill that I prefer over Sonic wave merely for the AoE damage it outputs in the jungle and the great slow for chasing down fleeing champions. Now remember, Lee Sin is not a duelist, and should not be fighting a champion alone, but if you see a nearly dead carry, then tempest is what picks up the kill.

Sonic Wave is picked up every four or five levels. Though it is a good damaging spell, it is nearly useless in the jungle.

Now while this may be an obvious tactic, as soon as Lee Sin gets his ult, he becomes a giant annoyance. Dragon's rage can be used to initiate a gank, to take a carry out early in a teamfight, or even to punish an overly pushy laning enemy by kicking them into tower range. This has amazing synergy with tempest/cripple, as the slow can really mess someone up.

This build is a lot easier if you are working with your team. Not having communication will end badly, you don't want to be blind AND deaf, so keep alert, and be map aware, and be SURE to use your wriggles' lantern wards whenever possible. A strong melee carry top would be preferred because of the synergy with safeguard and tempest/cripple could easily sweep a lane.