No feed screen
AFAIK.
After you install launcher pro, when you first press your home button, you'll get a popup that asks which 'home' you want to use. Select 'default' check box, then click on launcher pro. This will disable TouchWiz automatically.
As for Beautiful widgets, when you long press on your home screen, select 'widgets' and add the 'beautiful widgets' that you want to use.
Hope this helps.