Welcome Litlfeat at the doom7 Forum.
Well you got it working, check the ini file if
MinimizeSpace=0 the output should fit on a dvd+/-r
Also you could set DynamicBitrate at DVD Rebuilder
Mode / Dynamically assign Cell bitrates.
Now this disk is very big (how many hours?)
try and set the Options / AVS Options / Resize to Half D1
This will create a CVD 720x576 will become 352x576 (PAL)which is
fully compatible with the dvd standard.
Now you can use lower bitrates and have SVCD quality.
