Need help on best way to make this part

Dear fellow SolidWorkers,

  I am having a bear of a time trying to make a model of a part per the drawing below.  Which part would you make the base flange?

I would attach my attempt but I got fed up with it and deleted it.  Any help would be greatly appreciated.

***** Edit - Material thickness is .050" *****

Chris

SW15

SolidworksSheet Metal