Sorry for the delay, I've not got a Cockpit Sx, I have a Profi and Royal SX, but have set up a Heron on my friends Cockpit Sx9. I used the inbuilt mixers to deploy the flaps and raise the ailerons with the spoiler control. The manual in launcher details how to do this.
But the standard mixer doesn't deploy the flaps and then the ailerons but deploys them both progressively. Is there a specific reason why you want full flap before starting the raise the ailerons?