Just a nitpick or two. I'd move the 2nd SPLas out of the right arm and into the left in order to reduce the pain of losing that arm. I also suggest moving the AMS ammo somewhere else. The first ton can easily go in the head, the second needs to go somewhere well protected, though (lack of experience with the Locust has me drawing a blank, though).
I love this one simply because it's a light with two AMS. I used to run mine with the SPlas split evenly between the two arms. Seeing this build however has allowed me to rethink, and start running this zombied version. I love that idea too. Totally worth the poops and giggles it can create.
Mah baby. Nearly got 1k in my best match with this little bugger. 1 ton of AMS ammo usually runs out in a missile heavy game, so I understand the 2 tons in the original build. However, I'm okay with the risk of running out. Just change tactics and play more defensively in that case. Also the trouble of that extra ton of AMS ammo getting hit and killing you...
This is what I've been running. Been averaging about 300+ per game. Haven't been able to touch anywhere close to 1k though. Don't know if its my piloting or the current state of the game or what. Solid build, just not doing as much damage as I was hoping.