Rusty - the neck is not difficult at all...being scared of something is much worse than doing it!!
Simply get it straight (ish) then control the amount of relief with the truss rod. I was apprehensive about doing the neck but it turned out perfectly fine.
I always wanted to do a build but was scared of all the different stages - its wierd, I just started doing it and each stage just kept working!
The Amboyna fingerboard is as hard as metal - it resonates and almost rings when you tap it with your finger. The strings fitted are roundwound and after extensive playing (sliding as you do with a fretless) it remains absolutely unmarked in any way.
John.