Without a live map, I pressume a chip module will have to be used, mine was using the ahmed Bayjoo chip with the boost set to 16psi, I had to use beiges as the blue's ran lean anything over 10psi (they may have been old)

I would think though the standard blue injectors would struggle on this application

The t3 is a great option for more power, but I still think if its drivability and torque you are after the hybrid fiesta turbo unit is the best performer, no lag and instant power.

Plus the t3 will require more expense, t3 manifold, reworked down pipe etc.

I suppose there are different way to go around it, both options will give the power but will peform differently, all depends on what you are after