Help required to choose the best communication mode

Hi guys, I have been working on a rover…!
I have to stream video from ip camera in the rover to the control room which is about 1.5miles away from the rover…! Previously I connected my ip camera to a wifi repeater and got the output.
But the output was very lagggy…! I want you guys to suggest the best way to transmit the video from the rover…

Also advice me on RC controllers for controlling my rover without any lags…

P.S: There is no internet. The ip camera works without internet if they are on the same network as the receiver… So suggest the best that does require a internet connection.

A very long range video system:
robotshop.com/en/dragonlink- … ional.html

A very long range R/C system:
robotshop.com/en/dragon-link … hitec.html
robotshop.com/en/dragon-link … nigny.html

Note that you still need a camera and standard R/C system, as well as screen etc.