An interesting idea. It might work as you describe, with some minor adjustments to deal with the difference in screen size. In the mean time, you might try Sergey's pbchess addon, which includes a notepad and Coolreader, as well as more games. It is implemented as part of a launcher program which was for standalone QT programs as well.
The
Kobo Luancher
An install guide (with other tips).
Luck;
Ken