I like the L2k pre as well--and the pickups and....well just about everything about the L Series. Wonderfully made, and that variety of tones! I foolishly sold my older blueburst. It was a little more sweet and mellow that the other two. I always wanted that setup with a blend and mid knob. Tried a M series which has one, but the PUs were too tame. I never use the bright setting, but use the active some, but mostly over time I favor "just" the passive qualities. And another cool feature with G&Ls is if the battery dies, you can still play in passive mode. Take that most other active basses! I must say that the L2ks tend to be the most comfortable basses I've played. As comfortable as my Thunderbirds. You would do one justice and should considering owning one. Even the Tributes are top notch.
I suspect the bass your built is fantastic in all respects. I could see myself in line behind JJR58 in wanting it.