• Is this a 3/4 waltz with a pause after every two measures?

I choosed for an extra beat. It seems ok to me when I listen to the midi file.

• In this sheet the music spacing of my software isn't good. It has to be:

In the first measure, the second note in the right hand is too close to the second beat.
If in doubt, I use the logic music system of writing down the rhythm, pure mathematics: