WOW!
AFAIK this is the first AVStoDVD guide on the web!
for your effort!
Some considerations:
Step 3: After selecting Video Profile, to fix it you must click on the lock icon
Step 12: Multithread encoding is "on" by default
Step 15: I would add the possibility to see HighLights links by toggling on the "HL Links" button. It could be handy to understand DVD menu navigation.
Step 18: Save the project before START! It saves a huge amount of time if something goes wrong.
Great job indeed!
Bye