instead of Am in the chorus should be an F

DDDDU

DDDDU

A - - - - - - - - - 2 - 0 - - - - - - - - - - - - - - - -
E - - 2 - 3 - - - - - - - - - - 2 - 3 - - - 3 - 0 -

strum?

For me it's great tonation to sing. :)

It's great if you're a beginner. If you're pretty advanced and can change four-fret chords easily, then go for the other one. ;)