Pond Boss Forums POND CONSTRUCTION Building a dam Pond project from the beginning with pictures

I am gonna start building my pond in august.The dam will be 250 long & 7 ft. tall.I have some ?'s I need help w/.
1 What size of dozer should I get for pushing dirt approx. 100 ft. I will rent for 40 hrs.
2.Do I have to use a sheeps ft. to construct the keyway in the center of the dam & or all banks?
3.What size of overflow pipe is needed/I have 30 acres that flow over me from a valley?
4.Can I simply use a spillway instead of a overflow pipe?
5. How do i size an emergy. spillway if i use overflow pipe?
6.What is the best panfish to stock?
7.Should I stock w/ SMB orLMB?

If anyone has any other info. I will app. it!