What you are trying to do is not worth it.
1.First of all it will consume a lot of time and energy.
2.You will need appcloner and its premium subscription. Then you need to know how to set them up for unique fingerprinting.
3.Then you need 9 Clones of Appcloner, 5 accounts each and 5 accounts in the OG Instagram App.
4.Then you need seperate working proxies for each appcloner because 50 accounts on one IP even if unique fingerprints can eventually ban down the line.
5.Your niche needs to be scaled up really hard to make money, its not worth the time and the hours you will need.
6.Everytime you need to be careful and face account bans and headaches.
Are you sure you can do this manually?