I'm assembling a team to create hand made accounts for an account shop I am preparing.

The plan is start with tut island accounts and maybe some other low value accounts like air orbers until I have enough rep to sell higher value accounts. (suggestions welcome 😉)

All accounts by my team will be hand made, so I'm really only worried about the best practices to make sure an account doesn't get locked/banned after I make a sale.

Currently the only plan I have is to provide US proxies to my team and hope for the best. 

Use good proxies when creating accounts and use good proxies when using the account. Thus both you and the buyer should have good proxies to not get locked