How he looks. No, all are common, except the light legs. Clearly he is a cross, because legs light that would be produced by crossing the Cubalaya with something light-legged like an Asil.
Wheaten is something found in Cubalayas and Asil, so is longtail.
Yeah. I wonder if those short beaks are caused by a mutation or selective breeding. Which means mutations were there, I suppose, but in quantitive measures.
Multiple spurs is pretty common. It is a breed trait in Sumatra and Cubalaya, but will occasionally show up in other breeds.
As for the eyes, congratulations, you got something special.
Two mutations in one bird? Extremely rare. Most birds have more than two. ;)
A white Leghorn has at least two...