Your Keyboard is a standard TKL MX one that would take any standard MX key set, based on this page. The WASD set you refer to appears to meet the bill. I would recommend to get a thicker PBT set, though, like a Gateron, an Enjoy PBT or similar.
Whats available in the usa, or available within 7 days thats slightly better?
Signature Plastics is a manufacturer located wihtin ConUS and there are a few stores that are also within reach like
https://mechanicalkeyboards.com/Personally, I use Cherry/GMK double shots; but, I have had first hand experience with Vortex PBT key caps and SP DSA. The last was the worst, because of the ugly warping that the SP PBT dye subbed key caps presented, I do not know if the issue has been fixed by SP. The Vortex's are acceptable, but I would not say that they are great. As far as I know the best thick PBT key caps commercially available are Gateron's but I am not sure if there is a vendor within ConUS with stock. The store I know that carries similar caps is the IMSTO Store, but its lead times are unaceptable long and he has been reported with some backorder recently, it is located somewhere in Asia, so I think it does not fit your needs.
If what you want is just something better than your stock key caps and a bit better than WASD, I'd say that pretty much anything at the MK Store would be better than WASD. I bought a few individual key caps from them when I was a total newbie and they are paper-thin and the printing sucks. Even as a rocky, I could tell that these were some of the worst key caps you can get. Unless they have revamped their catalog, the only case you should consider those key caps is if you want a custom made set with custom legends and color combinations.
Edit> I just found some
Gats at MK Store but they are blank, if you are a typist they may be a good option.