What does the PoCo want?
Most utility companies have their standards available, free, on the internet. For example, here is a link to one in Arkansas: http://www.entergy-arkansas.com/Glob...above_roof.pdf
I included the link, so that you can see the detail that such specs have. Yours is probably very similar - but it's worth checking out.
Typically, you need to provide enough wire that there is at least 36" available to the linesman. You will need to mark the neutral- maybe even be required to use shrink tube or white insulation, rather than just tape. You may also be required to provide the attachment bracket for the PoCo line. You mast need to guy or brace the mast as well.
You are generally not required to provide the connectors; the PoCo likes their own.