Ba-Ma Freiburg visit help

Hi all

I am planning to go to Freiburg to study personal files of deceased airmen. I have about 80 names, that are already 60+ years death (war casualties)
1/ How many files per day they are able to prepare for me?
2/ How long in advance should I announce my visit?
3/ Are there only Officers or also unteroffizieren materials available to study?
4/ If there is nice photo in the Soldatenbuch, will Selke make copy of it for me?
5/ What is the best way to let them know that what I want to study?
6/ AND what is allowed to use for notes?(notebook, scanner, camera? or juts paper and pencil?

Thanks for answers...

Peter