Question about burning with Alcohol

[nachocheese]

I wasn't able to find a good tutorial for burning with the latest version of alcohol 120%.

I dont need to bother with backing up just the burning part.

What should I choose for data type, playstation 2? and what about the option "rectify sub-data channel"? Should that be checked?

Also some of the image files I have are only about 1.4 gigs in size. Is this normal for a complete game?, kinda seems like a waste of a dvd only using that much of it.

thanks for any help