I also use the songbook primarily. I do praise and worship (high energy rockin' type) so I deleted all the original songs from the songbook. I will find a style, or I started my first style from scratch yesterday (still working on it) and get the tempos, sounds, etc. like I need then save it as a song. I then have a custom list called set list which I changed each week for the service. I can then just simply select "next" on the songbook page and the next song loads in seconds. It works great.
Hope this helps.
P.S. I also find that it has been helpful to activate the "display hold" button right after I turn the instrument on. That way if I need to make changes or check things, I can keep playing and it won't exit out of a screen before I'm ready to.