Just from reading what you guys have gotten from the most basic successful research of the Black Lotus, makes me think there's several avenues you guys can pursue from here...
1. Sell as what's pretty much a power booster to mages. Might need more research to make it effective in combat, but outside of combat? It's pretty much already ready.
2. The effects on Awakened Animals is definitely interesting. If it 'tames' any animal like that? Not sure about Shadowrun, but there's usually a lot of income possibilities in magical creature taming in other fantasy settings... and Shadowrun does have some of those themes. Even more so if it works on otherwise untameable creatures, or creatures only tameable through harder methods.
3. If it successfully alleviates the problems Ghouls have? Or at the very least, reduces them? Not only do you have an abundant population you can get to work for you for something easily provided, but they would also be very protective of keeping the supply of Black Lotus leaves available. So whilst I'd suggest not having Ghouls actually work the farms themselves, where they can steal seedlings and such, the rest of your operation has got very loyal workers and soldiers. Provided there are not side effects that cause problems.
Oh, and as a side note on point 3? Starting in Lagos might actually be a very good thing for you guys then. Because Asamando should be very nearby, and that country's pretty much created by ghouls and the other infected from what the wiki says. Which means you might have a very big opportunity there.
Just, you know... make sure your product doesn't get stolen by government funded, or corporate funded, thieves? Because if it gives such big opportunity, you aren't the only ones who can see it. And the government of Asamando would either want to secure a supply to keep themselves in power, or a corporation would want to secure the supply to allow them to gain power over Asamando.