RB:

I will assume that you have all those songs as some sort of text files,
since you mention that you like them in "18 pt" font.

My suggestion would be to use a Tablet PC.
Not an "iPAD"-like tablet, but a full size one such as this.

http://store.shopfujitsu.com/ca/EcomCA/buildseriesbean.do?series=T900

It has a 13.3" (diagonal) screen that you can fold flat.
That's roughly equivalent to a letter-size sheet of paper.
You could use it in portrait mode and merely open any of
the songs, then fold the tablet flat and stand it on a regular music stand.

Good luck!
LLOYD S