At this stage a converter change is prob a good move . A stock converter would be struggling to hold the torque with the turbo.
Since the oil is good and assuming there's not excess junk in the pan it's worth a try
I don't know,Greg.The OP said there was some metal on the dipstick oil and from the vague description,the trans might be slipping.You might end up filling a new converter with debris. If it were mine,I would do a refresh before buying a converter. JMO