Two things, 1) trough feeders are okay if you don't get any significant amount of moisture. Anything over about 1/4 inch of rain and in less than 12 hours you will have a smelly mess on your hands. Less than 1/4" of rain and you just get a crust that the deer can break through.
2) on the 4 way in the picture above. Nice idea. The only flaw is the tray portion of it could be too long if you get the above mentioned moisture. The pellets will soak it up and the moisture will back right up to the 4 way and clog it big time.
Also, on the legs. You will find out fairly quickly that the 3 segment legs are very unstable and are a giant pain if you try to move the feeder. At your first opportunity I would recommend you get solid 1 piece legs. JMO