Yes, 10 days is too short for start to finish. However, 95% of the work is in the time leading up to hanging and fermenting the salumi. After that, it mostly just a waiting game. So, you and dad could START the salami, and you could send/deliver him some when done.
Also, its not the traditional way, but it WORKS! Look up Umai on the Internet. GREAT way to dry cure salami! I used it, turned out GREAT!!!! EVERYBODY loved it!
One other suggestion: summer sausage. Almost salami, a LOT quicker, and VERY easy with GREAT results. OK, maybe not "almost salami", but good, fast, and easy.
Or, do both! Summer sausage for now, salami for later!