Allthough I 'm not gonna get married, I could imagine that being too long. And, offcourse it depends on the amount of film you shot and edited.

Better to ask yourself how many hours you spend on it and if you could have done it in fewer weeks -> better timemanagement

And it's allways better to let customers know what time you need to edit the video upfront. If you tell them 6 weeks and finish in a month, they 'll be happy. If you say 4 weeks and finish in 29 days, working your ass of, they 'll be unhappy you were a day late.