While a landscape trailer would work, they mostly do not have brakes.  I believe any trailer under 3200 lbs. does not need brakes.(Your machine is over that weight anyway.) There are small twin-axle trailers with brakes and that is what I would look for.... but You may as well start looking for a 25 foot goose-neck trailer now.... you will end up there anyhow. It seems that anyone who gets into the antique tractors will eventually end up with more than one tractor and will need something adequate to haul at least 2!  <!-- s:wink: --><img src="{SMILIES_PATH}/icon_wink.gif" alt=":wink:" title="Wink" /><!-- s:wink: --> There are more than just a few that haul with a tractor trailer so you may even want to consider scheduling for your class A license now.
 I kid about this but it is a common path and I am on it too.  <!-- s:roll: --><img src="{SMILIES_PATH}/icon_rolleyes.gif" alt=":roll:" title="Rolling Eyes" /><!-- s:roll: --> (actually, I had the class A and gave it up.)
   Best of luck in your search for just the right trailer!   
               Cal