160hours/month @ $25 = $4000. Go and have a look at Upwork. Relatively few developers there charge less than $25/hour. It is considered a low-ball rate. Even the Indians or Filipinos will hesitate to bid on that kind of projects, and they otherwise have a reputation of "being cheap" ("the cheap guys"). The only place in Europe where you can get really cheap labour, is the Ukraine. Don't try to fish for this even in Romania or so.