The keyboard rabbit hole can be a bit pricey, I have managed to stop with custom 75%, 80% or tkl and a 98% oh and another keychron tkl I keep in work.Lubed the stalisers in my Q1, with the new Lemon switches and OMG, I think i found the sound I have been looking for. It does come at a hefty cost though from all the experimenting with switches lol
As for switches, I got lucky with finding gateron yellows in my first keyboard, I have different switches in every board but settled on the weight and linear type.
Keycaps have been one of more expensive outlays, down to my poor taste and indecision
and only ANSI layout with no physical Win/Mac switches knocks 2 of the 6 requirements. 3 if you count it only comes in silver or black for the 65%.