Install UDK engine in UE4 IDE

Hello Matthew, in short i want to create game using UE4 or at least with latest IDE and build it using UE3, so it wasn’t getting too much of resources,
The first thing that comes to mind is building in UDK engine first and then prepare it for UE4, but UDK IDE need more time to learn and in fact we know difference between UE3 and UE4, so this can be a kind of script, that will downgrade or upgrade the code. And if i had ability to install UE3 engine in latest IDE, then those scripts could simply convert the code from one version to another, maybe sync code and so on.