I'd also download the Firepower Pack (Mattock Assault Rifle, Phalanx Heavy Pistol and Geth Plasma Shotgun) and the Aegis Pack (Incisor Sniper Rifle and the Kestrel Armor set), as the weapons you get are considerably better than what can be found in the default
setting. The Kestrel Armor, imo, is one of the best for a Soldier class Shepard.
Maybe initially when you get it Schuey19, but after getting all the AR upgrades, it is a great weapon. That could be said though of all weapons, however for Soldier and Infiltrator classes, I'd recommend getting the Widow. Even without upgrades, still
a powerful and accurate weapon. The choice is yours though what one you pick.
Assault Rifles are ideal for Short to Medium range imo that is, where Sniper Rifles are for Long Range. The Mattock AR though, imo, is like a hybrid of both, as I've been able to use it like a pseudo Sniper Rifle at times. Not as powerful as the Viper or
Incisor SR, still a useful tool if you don't have access to a SR (Get the AR training ability from the Collector ship).
But for Short/Medium range, the Revenant (with upgrades) is a viable option for those who want a decent AR and don't want the Geth Pulse Rifle.