There are social as well as individual costs and benefits associated with this project as with every other projects in economics. I am not sure what exactly you meant by family planning project as it comprises several aspects and stages. Education, active participation, and action planning are required to achieve success in this type of projects. Possible costs-social disturbances may be there in countries like nepal due to lack of education, the direct costs of the project etc. Possible benefits-educational benefit, social adjustment, hiv and other sex related diseases will be on the decline, individual benefits as well as social benefits.... If you are writing a paper on this topic, I would suggest the following format: Intro-what is it, when did it start, how it is funded, success ....along with background information Body-Relate this with the success and costs of the program...not forgetting the different social and private costs/benefits. Go into details of some of the projects carried in nepal and present the actual numbers in terms of finances, and success stories. Potential bias arises when you input numbers but give a reason for it... Conclusion-What is the optimal level of funding -depending upon the success of the program in curbing hiv etc, educational benefits, increase in living standard as a result of this...etc etc...Costs are more related to financial issues than social I guess.