Great idea! Thanks for the compliments. The 'Do Want' Jagstang is awesome in my opinion, and to add a Jag trem and better colour scheme would be amazing. I think you should incorporate the Jag chrome control plates and maybe bring the Jag trem closer to the bridge to make the angle better over the bridge. A bit like the new 'Classic players', that way you wont need a buzzstop and it will improve bridge stability.
What colour scheme are you thinking?
My JS sounds amazing btw. I recently bought a PRS SE out of curiosity and my JS blows it out of the water with sound and playability! Seriously.
I want to build another but with a standard neck scale and wrapover bridge.
Keep us up to date dude. 😉