Hey there, that's great news
Lots of good advice above, not much to offer here bar reinforcing how light the alder ACG use can be, you'll easily hit your target weight.
Are you going for a 34" scale bass, as I know you've flirted with shorter scales over the years...
I play 33" 5 string basses and I love the playability without any noticeable sacrifices when held up against 34" basses.
I'm actually having a 31.5" 4 string bass built right now too, for even more playability
As far as finishes go, I would go for a natural fancy wood rather than the grunge black, your choice of flamed maple with a black pickguard tips the hat nicely at a more classic bass while putting out that cool custom vibe
I've had quite an experience of ACG basses and have been bugging Alan routinely for quite a long time, feel free to shoot me a PM if I can be of any help.
Eude