Hello Montage Question

[youngarmy5]

Now i am planing on making a montage already have like One and Half minutes. Now the real question is how long should it be, I don't want it to be like more then 9 mins but under that i can do. Please leave how long you think it should be in the Comments.

 

[Ali]

For sure 4-5 minutes it's gets more repetitive after.