[glassdoctor]

My 777 was 8 lbs with a 4s 6000 battery. The extra weight on your buggy is probaby in the motor mount and batter trays. Mine has carbon fiber mount and basicly nothing but velcro strap for the battery mount system so I would guess that saves at least 4-6 ounces.

So I don't know where you could save weight... but the good thing is that it won't matter that much for handling etc. Half a pound might make a small difference in the motor/esc temps and runtime though.