Node & Npm version required for ionic 2 beta 11

Hi Guys,

Could someone help me with NPM/Node.

I’m trying to upgrade my app to beta 11 but after running the following:
npm install --save ionic-angular @angular/{common,compiler,core,http,forms,platform-browser,platform-browser-dynamic} rxjs@5.0.0-beta.6 zone.js@0.6.12, I’ve received several errors.

What is the ideal npm & node version should I use?

This is my current setup
Cordova CLI: 6.1.1
Ionic Framework Version: 2.0.0-beta.10
Ionic CLI Version: 2.0.0-beta.32
Ionic App Lib Version: 2.0.0-beta.18
OS: Windows 8.1
Node Version: v4.4.3