OK, in that case the units you suggest would probably be OK.
But, consider the following:
When the aeroplane gets some height, it will be able to hear all the other stuff using similar modules. The combined signal strength of all the other units may corrupt your control signals. Not good.
The unit probably has a steel case, which will make it quite heavy for model aircraft use, you could replace the case with an aluminium one or remove it altogether, but you may then run into performance problems.
Have you considered using one of the control systems designed for model aircraft? That may be a better bet in the long run.
Looking at the data sheet, each unit is a transmitter and receiver, so you should just need one at each end of the link.
JimB