Good suggestion on the transparency. In regards the technical screening this can occur post the lottery draw. If the winner is not technically capable of being

Good suggestion on the transparency. In regards the technical screening this can occur post the lottery draw. If the winner is not technically capable of being able to deliver a product then just draw again. This will avoid a lot of work for the OP. My only other suggestion here is that entrants have to answer some sort of technical quiz or some other human only hurdle so that you don't get a million entries from someone with a script.