The Targeting Scope and Smart Targeting Chip seem to be the same thing to me, but give different bonuses and therfore can stack for a total of +5 to hit.
I think you would be better changing the two to be more individual.... here my suggestion.
Targeting Scope
CTL10
Surgery: Minor
MC: 500
CFC: 0
XP Cost: 75
Option Space:1
This modification to a projects a targeting reticule into the characters field of vision. When linked to a smart gun, via Neural Interface Plug the targeting reticle tracks the movement of the current aim point of the smart gun.
Used in this manner the character receives a +2 equipment bonus in hitting a target with a ranged weapon. Without a smart gun and neural interface plugs this modification provides no benifit.
and then change the Smart Targeting Chip, don't have it as a chip for a start, Chips in nearly every cyberpunk setting I've come across have no essese loss or humanity cost, or surgery as you just take them in and out of your chipware socket as and when you need them. I'm not sure why all your chips seem to have a moderate surgery cost? It's the Neural Processor that should have a serious cost, both financial and in surgery, as it involves mapping electrodes to you brain and nerves but once that's in the chips just jack into that.
So change Smart Targeting to something like below.
Smart Targeting
CTL10
Surgery: Serious
Purchase DC: 18 per level
CFC: 0.5 per level
XP Cost: 400 per level
Description: This operation installs a feedback loop between an existing cyberarm and targeting scope system. A standard Targeting Scope normal shows where the aimpoint of the gun is targeted, with this modification a feedback loop between the persons view point and the cyberarm holding the gun is created. Such that the cyberarm tracks the aim point of the gun to follow where the person is looking. I layman's terms it reverses the use of the targeting scope, you only have to look at what you want to shoot at and the smartgun will automatically be moved to aim at the target. As your cyberlimb responds, the targeting reticle will track across your vision until it is at the centre of your vision at which point it changes to a triangle to signify a 'lock' and all you need do is pull the trigger, sure in the fact you will be on target. Its like being in a jet-fighter, we like to call it our "street level sidewinder".
There is a small feedback delay in the most basic models or early models, but with additional neural pathways and improved servos. The system is automatically enabled when a smart-gun is 'jacked' in, and the safety set to off. Try to avoid early Russian models as they have a habit of engaging in stressful situation even when you don't have a gun in your hand, and you end up throwing your drink in your dates face.
Game Effect: Each level gives a +1 cyber bonus to attack rolls made with a smart gun, this stacks with the equipment bonus from using a smart gun and targeting scope.