Hi Tim and welcome from me as well .
On the pitting I would not fret over it so just use and enjoy the scope for now , as you said you have looked at the moon , Jupiter and such so it must be performing ok .
Over the years I have owned and looked through some pretty bad condition optics and the views were all good so just use and enjoy .
The marks on the eyepieces will clean off with a little optics cleaner from any camera shop but just dont put to much on as you dont want liquid getting between the intervidual lense's of the eyepiece , just a tiny amount on a sterile clean bit of cotton .
The coatings on these are quite tough .
Brian.