LTC4125 component

Hello i am having a few troubles  choosing the rigth componentes for my LTC4125 emissor, specificaly in regards to there components power ratiing, becouse there are some componentes where i can´t calculate that power correccly and i am afraid a chosse one that is to weak and end up burning them, does anyone has some advice?

Also there are some graphs in the datasheet where i can´t take any conclusion regarding some resistors, an exemple is in page 22 Figure 16 for an receptor of 40mA, i am building a wireless charger with the receptor at 400mA and so I can't conclude the rigth ∆VFB and there for the right resistor to pick up