You seem ambitious and seem to have good intentions but this is a serious project. As someone who has done work in this field I think you are biting off more than you can chew. this is quite literally, rocket science. You need to atleast have basic information before you start throwing around prices. For each flight distance what is: the size of the UAV the weight of the UAV the weight of the fuel/watts of battery+weight the type of motor weight of motor thrust of motor/consumption the type of frame/material wingload flying altitude without even basic facts like this figured out