Cover crops is getting a lot of press, but the implementation is different from one place to another. Most people either have a crop duster fly them on or use their own drill to seed after harvest.
I'd look at cover crop news at Successful Farming magazine and other ag press, with land grant universities and USDA.
If I were to hire it done I'd want someone local.
There is usually a very short time window to establish a cover crop. Another issue killing it before cropping next year. I'd see it as two months of frenetic work and nothing to do the rest of the year.
