Heya /tg/, I'm new to Legend of the Five Rings. After having my first character, a bog standard Doji Courtier, killed by a generic bandit in the first combat of the first session because he sucked dick at combat, I've decided to play something that's more capable of self defense.

How would I play a ninja in Legend of the Five Rings? By this I mean the guy who recognizes that being honorable often fails to get shit done, so he does dishonorable things like disguising, sneaking, and poisoning to get shit done. Has a solid cover identity. Awesome at ambushes and assassinations, awesome at noticing things, great at direct combat, great at social skills to maintain a disguise or ruse, decent at talking otherwise, decent at weaseling his way out of a duel because he sucks at that.

Obviously I'm looking at the Scorpion's Shosuro Infilitrator School. It's the only ninja School in the core book. I've been told there's a Lion ninja school in Emerald Empire, the Lion's Shadow, but I don't have a PDF of that. Can anyone tell me about it?

What traits, skills, and advantages should I get? The GM's kind enough to give me the XP my old character would've gotten, so that's 97 XP.
What should be my cover identity?
What tactics should I use?
How should I cover up my dishonor?
Where ARE the rules for poison (I can't find them anywhere) and how do I get my hands on some?

P.S. We're Jade Magistrates and we're hunting blood sorcerers and other evil magicians in Rokugan.