WOW, this looks really great, and is going to look TOTALLY awesome when the finish hits!!! Buckeye's a GREAT looking wood, unsurpassed in appearance!
You really designed a killer bass, sir!!! I've always been fond of Essence basses with the electronics package... the old big things come in small packages thing.
Your bass is going to totally smoke, in looks, versatility of the electronics, and sound... the Ebony neck lams will blow you away.
P.S. if you're not getting the 3 position Q switch, I recommend kicking out a couple bucks extra... the added versatility is considerable. The standard 8db Q setting is pretty strong... with a 3-position Q, you can get a softer setting in addition. The Signature Deluxe I just got has 3 position Q switches that go 0/6/9 dbs, like the Series I, which is really great!
I look forward to seeing the finish hit your bass!