I have do ninjutsu for some years now but am hoping to study kenjutsu and battojutsu and that would mean I would have to carry weapons with me also at the moment I am doing this myself so am trying to find good books/dvd on the subject.

I can't make any such recommendations, but I do recommend you learn submission wrestling. It's extremely helpful should you end up unarmed on the ground with an opponent on top of you.