Hi  @martinwinlow 

1/  Is the general setup layout as it should be as for as the CPE210's are concerned?  I have the 2 CPE210s on the main house on the same network, ie 192.168.1.xxx but with different static addresses.  Is this as it should be?  

>>>Yes, this is also the recommended configuration.

2/  What sort of connection speed should I be able to get between the AP and Clients as shown in the Pharos web admin page (Status > Throughput tab)?

>>>It depends on the wireless environment between them. But the rx/tx link of CPE210 is limited to 300mbps, it will be lower than this value. You may have a look on the following guide:

How to troubleshoot the CPE in AP and Client mode when the wireless speed is slow

3/  The 2 Generic wifi APs I am using are very neat but are not very well documented.  I have them set as Acess Points but the main setting that I am struggling with beyond that is a page that offers a choice of Internet Protocols of PPPoE, DHCP Static IP and Repeater.  Set as 'Repeater' they do appear to work bt I am not convinced they re optimally configured.  

>>>Normally, for access points, we don't need to configure PPPOE or DHCP, these are features for a router. I think you can ignore that.