Selective Soldering

Hi

I need few generic guideline input on Selective soldering consideration  . I read many doc in net  about this topic but not clear what is the   best way to take care in footprint

Q1> I  am giving 3mm (radius) package  keep-out around each through hole pin  from center on solder side. is it good enough for selective soldering ?

Q2> Which is the better way to add package keep out  in footprint or in the board ?

Please share you suggestion if you know more about selective soldering consideration
 

Thanks

Girish Kumar