MANA M285 opensource based long-range quadcopter drone Posted by demouser7 on Monday January 15, 2018 @04:06AM from the dronegarageblog.wordpress.com dept. https://dronegarageblog.wordpress.com/2017/12/27/m285-affordable-inmersionrc-vortex-quadcopter-clone-running-open-source/ ( 1 comment | 3 points | on HN )
You can get 1k in range with the antenna upgrade. There are also many other neat upgrades like GPS positioning.
Buy spare motors and clips, or a 3d printer. Having some guards while you work on flight algos will be helpful.