Will this be enough for proper account isolation ?

Hello, I am planning to create a new IG account that should be mostly whitehat. I want to grow it organically with as little chance of getting banned as possible.

For this I plan on using an older iphone with a freshly created apple ID. The sole purpose of this iphone will be to manage this one IG account (and a related twitter account).

The device had instagram previously installed, however on a different apple ID. But I am guessing that IG has stored the device ID somewhere...

The question is: will this approach be enough for creating a good quality, isolated account or should i buy a new phone? Also, if I am planning to connect to the same wifi network as my other devices, should I be using proxies or is vpn enough?

So for its a mobile there won't be any issue

I use like 4 personal IG and no shadow ban or stuff

Use the same old iphone but with a sim card, dont even connect it to wifi once. I have personally created 3-5 accounts from same phone in a week and all accounts are doing good, reels going viral and what not.