Yeah, that's about as light as it gets for Customs!
I've never understood why Customs seem to be generally that bit heavier than Standards, it makes no sense. Well, perhaps that's not true - maybe it's the case that they just make a lot more Standards than Customs, so if you're patient and shop around you'll find a lighter one eventually.
I've actually got a solidbody LP Standard which weighs a fraction under 8lbs. The weird thing is, despite what the scales say, when I pick it up it still feels heavier than my other guitars around the same weight, somehow! It must be the psychological effect of seeing that big chunk of mahogany. :roll:
I haven't mentioned, my Custom Lite weighs 7lb 7oz. Not quite SG-light, but a nice comfortable weight for me, in the same range as my Jrs and Specials.