[Msghost]

Would it be better to use this aged account or a new account and different address for the wrong item method?

Although the account Is aged/matured, the fact Is that It's flagged and has every chance of being locked/banned.

I'd say a new account Is the way to go, but be patient by placing a couple of legit orders prior to hitting the high value Item.
Ultimately, It's your choice.

I think I’m going with the matured account as I’ve been using that account frequently as of late. 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. My best bet right now is to prep the aged account with some more legit orders and hitting the high value item.