Welcome to the GMB.
I agree that restoration is often well worth it. I must admit that damage in full sight (i.e. on the dome) on a weight bugs me immensely (my weakness, I am afraid). However, I have never bothered with (small) chips on the base or on the bottom rim of the weight. 'My' restorer is very good and not expensive and so I take my weights to him without hesitation. He always warns me if something will be costly or/and problematic.
However, a word of warning: in some cases, restoration can be disastrous. I have seen weights which were not enhanced but literally spoilt by restoration; it needs to be done intelligently. Also, on some rare occasion, a weight may crack or break during the process of restoration. I have never experienced this myself but other collectors have.
I am not trying to put you off, just inform you. I know all of this and still get my weights restored.
PS: Nice weight, Dave. I admire you, I am not sure I would have taken the risk. I would have been too worried about the extent of the damage/restoration. Good gamble!