How to fill out this party, So 2 adepts, a street sam, and a mage walk into a bar... Options

[Patrick the Gnom...]

Alright, so about to start a game with a group that's pretty new to Shadowrun (and when I say pretty new, I mean 2 of the players have never played in a Shadowrun game before, 1 has a little Shadorunning experience, and the last has never played tabletop games before period). As the most experienced player, I'm probably going to have to fill in the weaknesses of the group. Currently, the group has 2 melee adepts, a bear shifter and a human, a melee cybered Fomori with Astral Hazing, and a human mage specializing in Manipulation, including mental. The GM hates the hacking rules, so we're almost certainly not going to encounter anything that would require hacking to get around. He's allowing pretty much anything (except the Radar Sensor due to some broken experiences from a previous game). So I was wodering what kind of character I should play. My current build is a cybered street sam with high automatics and enough Negotiation dice to get by, but I'm wondering if I shouldn't play something else. I'm worried that my team has too much melee but I don't know how to counteract this. Also, none of us have infiltration skills worth shit so we're a little shaky in that department as well. I was thinking of maybe switching to a Pixie infiltrator/face and then getting a few manipulation/illusion spells for battlefield control but I don't know. Any suggestions?