Can someone tel me what qualificatons a Independent Traditional Catholic Priest needs to have
First and above all, his sacerdotal qualifications: he must be validly ordained, and if asked about his ordination, he presents his credentials with alacrity.
A priest cannot just open shop and start his own mission chapel. There has to be a good reason for this kind of action -- a true state of necessity must exist, where the local NO diocese/parish is wallowing in ignorance of its purpose (the salvation of souls) and steeped in modernism. It is in this case that he has valid priestly faculties -- confession, saying the Mass and confecting the Eucharist, marrying couples, etc.
However, if there is in this diocese/parish another mission chapel (e.g., SSPX, CMRI) or the Indult orders (FSSP, ICK), then, in my opinion, this independent priest has no faculties. I would not go to confession to him or hear his Mass, unless it's an emergency and I or somebody I know is near death.