[Msghost]

I think I’m going with the matured account as I’ve been using that account frequently as of late.

The matured account It Is, then.

As said, the SE may work, but It does have a significant risk of failing for the said reasons.

And the card I’m planning to use with the new account has the old account’s billing address so it’s linked either way if they plan to investigate the situation.

I wasn't aware of the link between the new and current account.

As per below, I thought there's no ties with the address.

or a new account and different address

What you recogn gonna happen if this order fails on the aged account?