Audio routing help

Dear Elektronauts,

i playing and looking for myself to find the best setup.

I try different thing and ended up with this Gear.

Status now:
OT
x0xb0x
eventide H9
Ipad Air 2 with some app’s
RME FF-400

My routing idea as follow:

OT Main out => FF-400 in 3, 4
OT Cue out => eventide H9 in
eventide H9 out => FF-400 in 5, 6
IPad Air 2 Out => OT in A, B

The reason why i would like todo is record things from IPad or Samples from OT, to can sent this via Cue out the eventide H9.

Any other idea?

Thank you for help.

All the best,

waldemaR