I'd think about getting your feeder further off the ground. I like mine at least 6.5' off the ground. It keeps critters from messing with your feeder kit and throws the corn over a greater area. Even if you have a varmint cage animals will mess with your spinner. If you have hogs, having a feeder that throws corn over a wider area will prevent the hogs from creating a pit directly under your feeder that turns into a puddle every time it rains.
I use a moultrie feeder with the factory leg adapter wrap around the barrel thing, but I substitute in some longer, one piece metal, pipes for the legs. I think mine are 8 to 10' long depending on the specific setup.
Walk the night, travel light, cross the Rio Grande
Someone strums a mandolin, soft gulf breezes blow
My new life is waiting in old Mexico
-Robert Earl Keen