Hello,
it is a matter of personal preference but I would consider these options:
landscape A4
width=298mm
height=210mm
margins
hmargin=2cm
vmargin=2cm
full-screen mode and single page layout
page_mode=3
page_layout=1
You can play with these and the other options which are documented
here.
You can use the page-break-before css property to insert a page break between individual slides:
<div style="page-break-before:always"></div>
I hope this helps.