4 Gentleman Painting Progress

Here's some progress photos for a painting I've been working on and off for a painting study I'm doing with Dave Bondar. Been working on this for a month and a half already so I really need to finish it! There's several artists I'm looking at but one piece I've been heavily inspired by is "The Carpetbaggers" by NC Wyeth: http://www.fineart-china.com/upload1/file-admin/images/new10/NC%20Wyeth-932629.jpg