It's a good idea and in my opinion it's better than cossie management

All I ever see is people complaining of poor fueling on the cossie management conversions, and studabear above took his off too fit m/s

Sell the cossie stuff and get a ofam ecu with aem wideband so you can run closed loop, and a aem boost solenoid for full control
This is what I'm saving for on my zetec turbo