Unless you redesign the mounting point for the plate, I don't think this is going to flex much, you should look into how leaf-spring work, but if you're not going to, just go with top mount for your first design, it's hard to do gasket mount as your first board and not f*ck it up lol and also good top mount > bad gasket mount.
And am I the only few people that use the 3 top right keys for media keys? I mapped the key to [Previous] [Pause/Play] [Next] lol, not sad to see it go tho, I'm going to wait for the more fleshed-out render and plate design until I say anything more about the board.
Also, just my opinion but the logo on the brass is looking a little childish(?), personally, I would love to see a more minimalist design to go with a pure brass weight.
Edited to reformat the text as it was hard to read