7. Raise the Pokemon hatched from the egg to Level 50 and plug its stats into an IV calculator to determine my SSF. ---> not usually necessary if you know your parents' IVs, and the parents have multiple 31s, since you can tell where it inherited stats from the parents by talking to the judge in gear station, nimbasa.
Other than that, no, there's no faster way at the moment.
Other than that, no, there's no faster way at the moment.