dont worry. you're not late. Since your venue and BS has already been booked, then you're actually quite safe.
As for the dress for bridesmaids, it's actually up to individual. Usually to make it look good in pictures, better to provide so that they can wear at least according to the theme. but of course, there are also brides who don't. Think about it slowly! You have lots of time to prepare for this.
Well, the Videographer (VG) is especially needed if you are going to play an highlight before your banquet 2nd march in. not forgetting some people want to record everything that happen in the morning espcially during gate crash (the bride dont get to see what's happening outside you know).
If you are getting one, then it's better to start looking for one. Especially if you are booking those hot VGs.
As for those traditional procedures, it's usually few months before your AD. Need to sit both set of parents down to talk about it and discuss... so for that, you actually dont have to worry for now at all.
Hope the above helps!