So I'm getting into 40K. At first with an Ordo Malleus army, but I have my eyes set on Tau for later - then probably I'll join the hive mind.

As I haven't taken a look at their codex, but only their models, but I was considering an army containing something like this at 1500pts.:

HQ: Shadowsun - or generic hq similarly equipped

Elites: XV15-25 stealth suits

Fast Attack: Pathfinders and Gun Drones

Troops: Fire Warriors

Heavy Support: XV88s and Sniper Drones

Any ideas and comments on how this would fair would be appreciated