it might be worth trying something like 'ATnotes' http://atnotes.fr.st/
you can copy and paste to and from a note, hide note, keep on top note, etc.
the main reason i mention 'ATnotes' is that you could set the font type and SIZE
to whatever you wanted, well, to whatever you have already on your system. you could also change the background and text color to make it easy to read.
oh, and it's free of course.
(that said, it's better than the other desktop note programs you have to pay for.)