Preseeding questions - primarily configuration related

[Richard Owlett <rowlett@cloud85.net>]

I am doing a series of experimental installs to a test 
machine for the purpose of deciding what will work best for 
my particular goals. Using preseed.cfg files allows me to 
keep a record of what did or didn't work. My work 
environment consists of:
   a laptop whose hard drive is intentionally wiped with 
each install.
   a USB flash drive for current/past *.cfg files.
   a set of DVDs as install medium.
   *NO* network connectivity of any sort.

QUESTIONS

1. In the apt setup phase I wish the option to scan all the 
DVDs as in the manual install. How?
2. How do I preseed system wide configuration values. My 
current problem is setting "system font" - size and font family.
3. How  to configure individual programs? In particular:
    a. gedit - font size
    b. nautilus
        1. Tree view in left panel
        2. List view in main panel
4. Where would I have found detailed answers?

TIA