Welcome to the forum!
In answer to your questions, these features are in the program:
In Tools > settings you can change the font for the chord sheets from the selection of monospaced fonts in the list.
To change the font for the lyrics this is done in the Song Editor. Select Edit, go to the Lyrics tab and in there you can do some simple formatting including changing the font. Select the lyrics first and the formatting is done on the selected text.
For lyrics you can do this from the playlist using ‘Print Songsheet’.
For chords - in the Chord Sheet editor insert a page break using the button. Then change the ‘Pages per screen’ to 2 and that will give you 2 columns.
At the moment the chord sheets will not print side-by-side.
Portrait and landscape.
You will find this is not necessary if you use the page break and pages per screen option above. For sheet music you can scan or import from pdf as landscape but most music is portrait and you can then display 2 or 3 pages at a time to make the most of your screen area. Wide screen monitors are ideal for displaying 3 pages of sheet music side-by-side rather than 1 portrait page.
Alternatively display one page at a time and use a tablet PC.
If you mean for printing then select a landscape area of the page during import and increae the DPI to 200 or more.
Experiment with different settings and layouts and you should be able to do everything you want in Power Music.