Well, I was going to suggest a bad selection or the 555 Scarlatti sonatas but your idea is even better. Do you have such a selection?
In fact any selection is a good one... You can use a mathematical formula, pick the prime numbers or select by key or tempo. For this I use an excel file. These days you can also listen through most if not all of them in YT and select the ones that please your ear.
After you find the ones you want to use you go to imslp.org and print the Gilbert urtext editions because they are the best. Unfortunately If unlucky and it's still under copyright in your country it sucks because all good complete editions cost a fortune. Beware the Longo editions because they will teach you wrong.
But if that is too much just get the Schirmer edition by Kirkpatrick, it's a good start. Although focused more on the up tempo sonatas iirc.