I concur 100% with PJ-- use the XG option.
My only additional comment is that once you've saved the backing track to a MIDI file, you might want to use a utility such as Jorgen Sorensen's MIDI Revoicer or Song Revoicer (I forget the exact name) to change the XG voice selections to better-sounding PSR-E453 panel voice selections-- you can use the voice list in the PSR-E453/PSR-EW400 Data List to see what panel voices are available.
However, do be aware that Yamaha adds 1 to the Program Change numbers-- inside the MIDI events they are numbered 0 to 127, but Yamaha numbers them 1 to 128. So when you look up a voice in the Data List to get its MSB, LSB, and PC# values, you'll need to subtract 1 from the listed PC# value before you enter it into the Revoicer utility.