telemetry use case - help required

Hi,

We are planning to develop a solution for a telemetry use case in a forest like environment with a radius of 1km.
We are looking at around 150 end nodes.
The sensor data may be required once in 5 seconds from every node and the data payload could be 128 bit.

In India, the following is the ISM band specs.

Frequency Band: 865-867 MHz
Low power RFID equipments or any other low power wireless devices or equipments
Power: Maximum transmitter output power of 1 Watt ( 4 Watts Effective Radiated Power)Carrier Bandwidth: 200 KHz


We are considering TI CC430 based solution for the nodes.
GWAP looks interesting as well to use it as protocol.

I have the following queries:
1. Can a gateway based on CC110x chips handle this much data 150 x (128 bit + GWAP overhead) once in 5 seconds
2. Is it possible to meet the range requirement of 1 km radius in a forest like terrain.


Kindly help me as i am a newbie in UNB/panStamp related technology.

Other alternative that we have considered is LoRa, but TI UNB looks better considering the cost factor.


Thanks,
Saravana