Willhelm,
Firstly I would like to say what a great job you are doing. Secondly I would like to offer you my services as a researcher and tester, I have studied the Zulu wars for more years than I can remember and would love to help out. As a tester I have no experience with Mount and Blade I do however have experience with many mods elsewhere. If you are looking for help I would love to be part of the team.
Also as an idea for musician or banner bearer regarding the zulus, I think you should have a special Zulu with a red coat and rifle (maybe as the banner bearer) as the Zulu's used that tactic a lot to put fear into the British.
Kristian
Oh and I have also been to Rorkes Drift.