Ultimate CF SL Disc 8.0 Di2 Cockpit mount Garmin Edge?

Hey,

I just started getting into cycling and bought myself a used Ultimate CF SL Disc 8.0 Di2. Now I wonder how to mount a Garmin edge properly to the cockpit, as the cockpit itself is “organically” shaped and has very little mounting options (see pictures). Can someone recommend a mount for my Garmin edge that fits?
Second, as the bike is mostly stock and some time has passed since 2018 I have started looking for upgrades to make the riding experience even more pleasant. So my question what upgrades would make sense are recommended?