How long is that going to take, though? It should not take but a few days for a district court to throw it out, and clearly it will because as noted, abortion is not going to end in SD anytime soon, so that implies that the district court will very shortly make some kind of a ruling. That leaves the question of how long it will take the appellate court to deal with the case. I'd say less than a year.
I know that the immediate outcome of this particular statute is unpredictable, but I still see that it's a start in the right direction. I think that those who support the protection of innocent life have not only the moral high ground, but also current science, on our side. The push to overturn Roe will not end if this law is struck down because as the Court is returned to the "original intent" of the Founders, other states' legislatures will likely introduce and pass similar laws.
Personally, I also have a respect and affection for those who are willing to do the right thing, even if the conventional wisdom is that they will not succeed.