I think a Vortex Race 3 (and by extension the Tab 75 for same reason outlined below) is a pretty esoteric choice for a first time mechanical keyboard purchase.
It is a good (actually great) board with impressive build quality and functionality but it certainly is a bit of a risk in usability.
Main reason for me saying this is that it comes with DSA profile keycaps which feel *very* different to anything you may have tried before.
They are certainly a love or hate affair since all the keys are symmetrical, low profile and the same height across all rows. I can't type or game properly on them at all personally.
I think a safer bet is just to try in this order: Leopold, Ducky, Varmilo or Filco keyboard.
Leopold is simply the best "out of the box" experience you can get in all aspects. I put Filco at the end of the list only because their stock keycaps are of a thin ABS and prone to shine, that aside they are great boards and built like tanks.
A wildcard recommendation seeing as you mention you enjoy tactile switches is the Topre Realforce, the switches are beautifully tactile and quiet.
They are expensive and not actually truly mechanical though, they are high quality rubber dome switches with springs and a electro-capacitive sensor.
If not for FPS gaming where I need to spam keys very quickly I would use my Topre board 100% of the time.