sencha touch performance on Ext.application

[faustoct]

I'm tweaking the code looking to achieve a better performance. I eager load some views on Ext.application like

Ext.application({
    name: 'Club',


    requires: [
      'Ext.MessageBox',
      'Club.helper.Functions',
      'Club.helper.ViewManager'
    ],


    models:[
      //'App'
    ],


    stores:[
      //'App'
    ],


    controllers: [
    ],


    views: [
      'Access',
      'Home',
      'LoginConfirmationCode',
      'CreateAccount'

    ],


    launch: function() {
    }
});

The views are pushed to portview immediately as soon as the application loads. Is that a good approach or should load it lazily or use other technique?