The nRF24l01+ modules don't give you anywhere near 1km range even with those antenna, 300m would be a generous bet I think.
Anyway, let me know what range you get out of it.
I use a FS-TH9x RC radio module with Arduino, pretty neat. You can consider the OpenLRS modules for long range flights, later on. Or xBee Pro for bidirectional comm.
HobbyKing's 433MHz telemetry radio is not a bad choice too.
Also, Aliexpress is sort of unreliable and shady descriptions, try not to buy anything expensive on there.
I got burned over 2 deal when the package never reached me and got only about 70% refund.
Good luck!