If the mds exists, pick it. The program will only tell you off of you don't
The filesystem options don't really matter for a data disc and are all valid on all types of media. So long as you've got UDF (for Unicode and long file names) in there somewhere (which you have), you're good to go.
The filesystem contained within the ISO has been built with the options you selected. The settings don't apply to the actual burning phase, just creation.