Accessing Multiple Instagram Accounts

Hi all, I've recently purchased a few aged Instagram accounts and am wondering how I can change the profile information without leaving footprints.

I have synced up the accounts to Followliker with no problem, but before that, I have to change the username, profile picture etc. and that's where I feel I am leaving footprints.

I thought of using Bluestacks just to change the profile information but have read that many people are having issues. My other thought was to use Chrome extensions to change the IP and device information, but I'm currently having issues with changing to the provided proxy that the IG account came with.

Any help would be greatly appreciated!