Hi @Henrik_123 - you can see my similar deliberations on this thread. Having just completed the transfer it seems to have gone ok and I’ll feedback the answer from Akasa re. my question in that thread.
As for whether it’s hard - it’s not technically demanding but I found removing the connectors very fiddly and delicate. Make sure you have some cleaner and lint free cloth to remove the old pads/paste (as per thread). Oh, and if you want WiFi functionality (I didn’t) note that you’ll need an external aerial (additional purchase from Akasa). Good luck!