The Treasury already has enough income to pay its bills and service its debts.
The coin minting idea is based on a misreading of the law, so it is not constitutional. The Treasury cannot legally treat a coin minted under that statute as if it was tax revenue. The law simply does not provide for that.
So Biden should simply knock off all of this talk of default and direct the Treasury to service it's debts through its tax revenues as it is legally obligated to do.
All the rest of this is just political grandstanding, and it's irresponsible.