Can we have sweet potato in place of bananas on day 4?

Hi,
I was wondering if we could eat sweet potatoes in place of bananas on day 4? They have very close levels of calories, fat, fiber, starch, potassium and sugars. The banana actually has less fiber, more sugar, and less potassium, so it seems like it should be ok to eat sweet potatoes. Will that mess up my diet? Thanks in advance!

Hi,
for banana substitute pawpaws (papayas)
do a great job - they call them also "Indian bananas". I regret but we don't have any experience with sweet potatoes regarding day 4.

All the best,
Gabriela