Is $3,000 (all inclusive) for 10 days too much to pay when traveling to Costa Rica in the "green season"?

Planning to leave in two weeks but can't decide whether we want to book ourselves or have a travel company (Costa Rica Expeditions) plan it for us. Since it's the rainy season I understand that booking won't be much a a problem. I think it will be around $250 dollars a day which includes hotel stay, travel, food, admission to parks and activities. Everything that I've heard is that Costa Rica is fairly inexpensive. I want everything to be planned by someone who knows the Country, and since the travel service is based in CR with local employees planning the trip I think it's a good way to go. My friend wants to book things ourselves but my question also, how will we find guides, transportation, and things like that. This is my first out of country trip and want to do the safest yet most adventurous/fun trip. Any info would help, Thanks!