It is reasonable to put together. Not nearly as hard as the RC10 I put together years back. Harder than putting together a litestick plane kit. It was about 2 evenings of fretting over the instructions, trying to make sure that I put together everything right. In the end, I found that the actual construction was not critical. Adjusting the control links to get stable flight is a challange. But you will have that same challange with a RTF model.