Mechanical Keyboards

Hi. First, you need to know that my main language it's Spanish but I like to use the English layout keyboard so I need the ALT codes.

I wanted a mechanical keyboard since forever, for me it's a little expensive. Also, I like the idea of a TKL and so in my mind a K8 Pro was the chosen but being a while since my desired configuration isn't available.

Some weeks ago I'd read about the C3 Pro and for the price was a non-brainer and the opportunity to know if everything will be OK with a TKL keyboard. Just minutes after installed it I realized (after a search) that you don't have an option for ALT codes which I really need.

I've read several information, but it looks like I need to modify (or create) a new layer with the software Via. So I went to the Via site, load which I supposed it's the correct json file [c3_pro_ansi_red_v1.1_20230823.json] but I simple don't know how to do this.

Also the symbols that I use the most (and want) are: ALT 168: Open interrogation symbol ALT 160/130/161/162/163: á, é, í, ó, ú ALT 164/165 for ñ and Ñ

I don't know if it's possible but maybe would be find if I can create something that allow me to hit the CTRL + a = for á and CTRL + SHIFT A = for Á

If possible, I want to avoid the use on an app like hotkey

Note: As I'm on Windows I'd read in the Keychron site that I need to choose the layer 2 as layer zero (and one) are for the Mac mode.

TIA