Then I started to route the neck pocket, pickup and tremolo cavities. But before that I drilled a bunch of relief holes. If you have trypophobia, now's a good time to look away.
Then routed the neck pocket to a depth of 18mm, bearing in mind my neck is slightly thicker by 2mm.
This time, the pocket was really tight so I had to sand off some meat from the neck itself. I may have to widen the neck pocket slightly later on because from preliminary measurements the neck may be slightly off towards the bass side by 1mm at the bridge, and that makes a significant difference in terms of string alignment.
Then with the neck in place, I drew out the position for the neck humbucker. In hindsight, I could've gotten 2mm closer towards the neck but I didn't want to take chances of the humbucker not fitting properly. I guess it won't make a significant difference in terms of tone. I'm hoping to get the bright, neck humbucker tone you hear on players like John Petrucci, Steve Vai etc.