Hi @Bharath Kumar Ramachandran​ considering the options I would prefer either to go with Option 1 or 4.

Option 2 is unofficial and I won't consider going for it. It's always better to use the official one as we can trust the provider.

Option 3 should be good but as there is a doubt with the licensing then I would not take a risk. If you want to go with this option then do all possible research w.r.t the license part and then go for it.