Wireless area connection

Good day everyone.

We have 1 main HQ office and 3 remote branches , HQ has line of sight with branch1 only, branch 1 has line of sight with both branch2 and branch3. (diagram file attached). What would be the right way to setup a such wlan that allows all the branch and the HQ to be connected between them.

Thanks in advance.
wireless_network.jpg

I will recommend to use RB433 with 3 wireless Interfaces on Branch1 and the rest RB411.
Use 5Ghz between HQ and Branch1.
U can use 2.4Ghz between Branch1 and Branch2 and Branch3 depends on the interference and the distance.