Creating mesh network with cc2650 and then range extender and then send data to internet.

Hi Guys,

I am creating a  mesh network of various cc2650 and having different Sensors.
Following things i need to do:
1) Make every cc2650 with each other.
2)What i use to extend the range of cc2650 somewhat around a Kilometer?? Should cc2592 will work for me??
3)I need to send all data on cloud so what to use as a edge router? should cc2650 can be used? or i need to use some other IC like cc3200 and i need to use 6LoWPAN function of cc2650.

Any help will be greatful. 
Thank You