By way of an update I had a little bit of time again to play around with this and following the excellent help from @mateo_salta managed to get somewhere.
A little headache with the install since the UBPorts installer had changed meant that I had to go back a step and follow the instructions right at the top
Ie wipe phone with twrp PLUS change the file type where I could in twrp to EXT4 then reran the UBports installer and it worked again!
The next trick involved reading instructions a little clearly as to try to install the Openstore click using the first link we had did not work (it was not for 64bit!) so using @mateo_salta google drive I managed to download it then install via the terminal using the pkcon instruction above.
Open store Downloaded and installed as well as UT Tweak
Now to add some functionality as I note I still need some more apps.
Camera I can confirm does not take pictures on my device (yet) but it does open and switch cameras
Lots to do and cant wait to get cracking again on this.
Smaller update. I note a few things:
Updates via Open store dont seem to want to work even though the system is writeable and also the device is not picked up when plugged into a laptop.
All fixable I am sure.
In the meantime I have got lots more apps installed and noticed all my older apps are not working even though they installed via the Openstore ...thats for later!
Strange it is the web apps with ogra containers that dont work