DEM help with mixing the flange and direct signals

[makaze808]

Hello, I have an 80's D E M which has the direct an flanged outs, I don't fancy hacking into the pedal itself. I am building a true bypass box for it and after blending the dry and flange signals on a stereo amp I much prefer t be able to do this. So I was wondering about feeding the to outputs into my true bypass box, into some form of mixer.

Would a simple potentiometer be adequate for this, running the DEM outputs  to outer lugs and taking the wiper as the blended signal? If so what value should I go for? Pointers if this is the wrong way appreciated