Payload size and speed are major consideration for unit price. Besides there already are standoff autonomous munitions, we have had missiles carrying their own

Payload size and speed are major consideration for unit price. Besides there already are standoff autonomous munitions, we have had missiles carrying their own guidance hardware for more than fifty years now, and if you want speed, rocket will definitely beat propellers Tldr you've built an argument on top of a triad of features that actually are more of a 'pick two' deal.