From your options,3rd is the best
Regarding Clay-
Most likely he will skip it all but just for speculation purpose,
In my opinion,he should play-
1.Monte Carlo-most top guys except Nadal skip it as its the only non-mandatory masters event (last years field was very easy)and if he wants to go for points he should try it here since even if he doesn't feel physically well on the surface there's plenty of time to recover for grass season and you never know he might get lucky and Nadal falters he gets a missing masters title
2.Madrid-If he's really targeting a clay title,this should be the one.
3.Rome-Since Madrid and Rome switched spots and due to its close proximity to French Open many top clay guys might not give their all here.And again an opportunity to add a missing masters title if stars align
4.French- Test out the clay game in a clay masters and Play only if he feels physically fine on the surface.