Yakuza, installing the cooler using factory turbo to guard piping and alloy piping everywhere else should cost around $6-700. It could be more or less depending on what you want done.
If you've gone to all the trouble of getting a new turbo, why do you want to short change the engine on management? As great as the safc is for mild mods (I'm using one myself), it's very, very easy to reach the point where good driveability is only going to come from a full fuel and ignition control.
What turbo is going in, btw?