Happy 5th anniversary! I think you should go with your favourite of the bunch. The in-house movement thing doesn’t matter (sometime in-house movements can be a disadvantage). I am also a lefty and think the Tudor Pelagos LHD is a great option but The L.U.C GMT ONE is a great watch to comemorate such a big occasion!
All up to you! Hope this helped.
It depends. If you’re trying to invest in it or if you like it. Personally, if it is 100% real then I would buy it but what matters is what you like and your intended use!