Check my loooper drawing?

[varialbender]

I'm gonna make a loooper for a friend, and he wants it to act as three separate looopers, so as to insert boxes between the loops. The jacks are In - Send - Return - Out... repeated twice more. Are there any problems with the schematic I've drawn? Thanks a lot

[varialbender]

I realize now that I should have 3 separate current-limiting resistors for the LEDs to avoid a change in brightness.

[varialbender]

Also, pulldown resistors from sends and returns to ground?