The highest priority should be getting Obergefell overturned, since it signifies the ultimate victory of the anti-Torah forces of the culture wars. This could happen with just one more Gorsuch-type justice replacing a liberal on the court.
The same majority could easily overturn Roe.
And yes, it’s possible, and desireable, that Lawrence be overturned as well. Since this is a bit more controversial among conservatives, it would be better to wait until there is a larger conservative majority on the court before trying to have it overturned. Few people nowadays want to actually arrest a lot of people (or even anybody) for toeiva they engage in in the privacy of their own home. However, the importance of having such laws on the book is symbolic — that society (in those states where it would remain illegal) disapproves of toeiva and wants to discourage it. If I’m not mistaken, I think a similar point was made by R’ Lichtenstein in advocating for such laws. Even so, given how widespread acceptance of toeiva is in today’s society, conservatives may be too pessimistic about the possibility of overturning it to try a case in the Supreme Court, or they may not actually want to overturn it.
Overturning Obergefell and Roe would be relatively easy with one or two more conservative justices. This would happen through “natural” means — hashgacha, of course, but no open miracles.
Overturning Lawrence would be more akin to an open miracle, not technically, but as a practical matter. Even so, it could happen.