I do the same thing as you. Need 4-5 good patches for worship. Here's a couple of pointers i've learned.
Other user was right on in creating a U2 type patch with 2 delays stacked.
you can choose up to 5 effects per patch not 3 as stated in the thread. when you connect to the actual FX unit you can turn effects on and off and assign to footswitches. I usually turn vol off and stack a couple of drives in there
Check out the Line 6 amps. They are fantastic for the sounds you are trying to get. The line 6 sparkle in particular will give you a GREAT clean tone then stack two delay on with dotted eighth and qtr note each. Instant worship vibe. Try J45 line 6 model too (i think that's the name) which gives a great crunch.
You can overwrite any bank on the unit. There are 3 "user" banks, 30-32, which are blank but you can overwrite the factory ones if you need more options.
remember you can reorder and assign any effect to any of the 5 top footswitches. This gives tons of flexibility.
i also run on a quiet stage with in ear and not through an amp. The XLR outs are really nice for this. I do all my tone tweaking at home wtih iphone and app then make sure tones are assigned to i can use the unit as a standalone for live performance. This avoids the app "lag" that is caused by bluetooth that many have complained about. I wouldnt try tweaking tones during live performance with the app. remember you still have all the flexiblility of a normal pedal board in this scenario with the footswitches.
would like to see more good worship patches on the cloud but honestly if you just start with a good basic amp sound then add reverb and delays to taste you get most of what you want and it keeps it quite simple.