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TPS62740: TPS62740 + SuperCAP

Part Number: TPS62740

I want to use a 0,44F as output capacitor of a TPS62740.

The DS states that "A larger output capacitors can be used, but it should be considered that larger output capacitors lead to an increased leakage current in the capacitor and may reduce overall conversion efficiency. Furthermore, larger output capacitors impact the start up behavior of the DC/DC converter".

How can I calculate the new efficience of the converter with the leakage current of the SuperCAP?

How will impact the inrush current of the supercap on the current limit of the converter? Do I need an external soft start to charge the SuperCAP with a current less than the current limit of the internal HS mosfet?

Will the TPS62740 be able to ramp up the output voltage to 1.8V?