So I just started up a Lockdown campaign with a bunch of new players. One of them has quite a bit of experience with Shadowrun, a few of the others have prior experience with RPGs but none with Shadowrun, and a couple have little experience but are taking to it well. The party is a face/generalist, two magicians (one shinto shaman, one druid), a rigger (he's got a few rotodrones, a tricked out van, and a couple Ares Matildas), a decker, and a player who will come in later and hasn't made a character yet.
This is my main dilema. I have two arcs of my own design that I want to play out here, and I'm good at big picture stuff but really bad at actually introducing the arcs to the characters and coming up with early runs for a buildup. That's what I'm hoping to get some help with. We've gone through the first adventure published in the Lockdown book (where the party has to retrieve an Ares exec's kid) and when we meet again I'm running the second one (where they're hired by the Morelli family to chase off what turns out to be a bunch of Pax's lackeys). Once they finish that and get established in Boston, I want to start in on my own arcs. The first one, and the bigger one, involves a bunch of head cases with a dominant Deus personality banding together and intentionally infecting others in the city. Ultimately, they want to recreate a fully powered Deus by dumping a bunch of Deus-infected nanites into Renraku's HarborGuide mainframes and firing up all 25 of them. Alternatively, they might try to use the old servers in the ECSE. I know that if they party can't catch on and stop this from happening, Deus will come back full force and take over the Boston Grid, then the party will have to find a way to shut it down before the Corporate Court decides to just drop a thor shot on Boston. The second arc is a little less fleshed out, but involved Damon playing a long game to take over the entire Boston underworld by manipulating the two mob families into finishing each other off. He's got a former Seraphim working as his right hand man who is masquerading as a Moreli family enforcer right now.
So how do I actually get these arcs off the ground? Any suggestions for early teasers or early runs I can give my party?