What about getting a plan or some ideas and tackling some of it yourself, if you are worried about costs? A lot of people don't want to mess with landscaping, I get that, but it is one of the easiest things that a person can do themselves. Plumbing, electrical, drywall, laying hardwoods, those are all much more difficult that most landscaping projects. Plus, I personally find landscaping a lot more fun, at least you are outside anyway
You can get a nice plan from some landscape folks and the pick and choose the parts that you want to tackle. Just a thought anyway. Good luck!