Delete 29 million rows from 1 billion rows table. (SQL Server 2008)

I need suggestions from experts.
I need to delete 29 million rows from 1 billion rows table.  This is SQL Server 2008.
I am sure foillowing query will work. I know that it will take an couple of hours or more to run it.
Does anybody have any suggestions/improvments in following queries? My main aim is to have these queries consume minimum resources and avoid 'transaction log full' error.


      Declare @rows int
      set @rows= 1

      WHILE @rows > 0
      begin
             DELETE TOP (100000) FROM HugeTable
             Where Key < 29660822
                   
             set @rows = @@ROWCOUNT

             CHECKPOINT
      end