I think the Longarms skill is kind of overlooked. Yes, it means you don't get the huge DV you can get with automatic fire without customizing weapons, but shotguns and sporting rifles can be quite good. Sniping with an assault rifle can work, but always runs into the problem that AR ranges are half of what you get out of a sporting rifle, much less a sniper rifle.
Unless Sensitive System is core to your character, you really shouldn't take it as a non-awakened human. As an infiltrator you may want to pick up the Hardware skill, as it's used to defeat many security systems and high tech locks.
I personally like cyber-senses, as you can get options unavailable in other areas and get all of the things together in a single package at creation. That said, they do cost more cash and have an essence cost, unlike getting earbuds, contacts and glasses.
I'd suggest picking up a sporting rifle or shotgun for close combat where your sniper rifle isn't a good choice. Your comlink shouldn't have a system higher then it's response and you should at least pick up the Basic + user package. A medkit is a great choice for pretty much all characters, remember it can operate in automatic mode or be teleoperated by a trained medical professional with a matrix link, even if you are unable to use First Aid. Pick up a handheld sensor with a Motion Tracker, Radio Signal Scanner and some other sensor you like. Use it in passive mode to detect other motion sensors and the signal scanner to pick up wireless connected devices like security cameras, locks, sensors, drones, ect.
While you are a stealthy type, you might want a mini-welder. It's not a stealthy way to get though a locked door, window, wall or small car, it can be useful when your choices are reduced to loud and alive or quietly dead.
More Initative Passes could be good for if you get into combat. You can do this with Cyberware (cheap, big essence cost), Bioware (expensive, small essence cost) or Drugs (cheap, no essence cost. May have serious negatives later). For now, I'd suggest a stash of cram for if things get tense on a run and you need 1 extra IP for the next several hours.