Your journey is very interesting for me and I am really curious how you will decide.
The emotional criterion is for sure the best one to make your personal decision.
The Omega WT is not a limited edition. So there is no pressure and you can keep your time.
The only concern I have is that Omega will have a price increase soon (probably starting with February). At least I was told this by the staff of the Omega Boutique.
P.S.: the steel version is probably the more “intelligent” choice. The price-performance ratio is really enormous and a steel watch is also better suited for travel (less likely to attract the wrong attention).
The Sedna gold version simply appealed to me very emotionally.
P.P.S.: Be sure to check out the steel version with the steel bracelet. Really wonderful!