Wouldn't take long to do the project appraisal on this: 300m investment paid back through the landing charges of 'up to' 14 cargo planes a day. You would need a Fedex and / or DHL operation to make 14 a day and that's not going to happen unless you tempt them there by letting them land for free; and even that wouldn't be enough probably, due to the 'back end of nowhere' location.
And relying on pure freighters is a sure fire way to burn the 300m. Pure fantasy project.
Remember the old aviation adage: 'the best way to make a small fortune in aviation is to start with a large one'.