I'm afraid I'm not the person for the job. Go would be perfect for parallella and Adapteva should do their very best to support it out of the box. Since Go is implemented in GCC, Epiphany should support it as well. At least that's my humble opinion. The concurrent stuff in Go and their Epiphany architecture seems like a great "marriage". If anyone is interest in doing that please drop a line here.
Again, in my humble opinion, the people from Adapteva should be the ones to curry the weight since Go is officially under the GCC umbrella.