Thats a nice writeup. I did my vg30e and my vg33e this year. I just use the factory marks and marks on the belts, cam, shields and crank gear.
I also noticed if you line up both cams and crank pulley with aligment marks. The engine is at TDC.
You can varify by looking at the plug 1 in the cap.
I also noticed the thermostats are date stamped by Nissan. My 93 truck had a date stamp of 12-94. On the timing cover some one scribed new t belt 12-94. Obviously they threw in a new thermostat 12 years ago. Has 171k now.
I still ahve never changed a cam seal on any of my VGs. Done 6 vg3x motors so far.