Hm, just realized: Medusa Extensions have Body 1(1). that enables you to install a mini weapon mount, allowing you to add a stun baton or shock glove.
Add 20 of those to your hair and have your decker run a swarm program with 10 individual swarms.
Now, you can lower Body to gain an additional MP (so 0(2) ). That enables you to integrate a small weapon mount for a heavy pistol or machine pistol.
Repeat process and try to avoid getting hit with various source books 
Oh no, if I was a GM I wouldn't hit the person with source books. I would do something far, far worse. When he showed me his final character, I would simply smile, and say, "Are you suuure?" And then not say anything more about it. Then, first session, make him go through a metal detector at a security gate to get to the meet, before the job even starts. He gets thrown out for trying to bring 20 heavy pistols into the meet. Mr. Johnson uses the unprofessional conduct to reduce the team's pay by 20%.
And when the complaining starts, I will shrug, turn to the idiot, and say, sweetly, "I did ask if you were sure, remember?"