For a nice accessible summary of Leibniz Best of All Possible Worlds theory I recommend this paper by James Franklin:
https://www.academia.edu/9001873/Two...izs_best_world
Keep in mind that for Leibniz this being the best possible world means the best possible world in toto i.e. considered from start to finish (I’m disregarding modern accounts of Possible World semantics here though we could take this as the total state-of-affairs which makes contingent up reality from start to finish). So depending on the temporal boundaries of such a world he arguably* only requires the amount of Good to exceed that of Evil by the greatest extent possible – an possible extent which determines the extent of what ‘Omnibenevolence’ means.
*I say arguably because since God acts under the necessity of His own Nature rather than through free choice it may be that the world with the most good in has to happen no matter how unpleasant the rest of its contents are.
I am not accusing either of you of philistinish readings of the phrase ‘Best of all Possible Worlds’ but it’s worth noting that some Pessimists were arguably committed to this. Hartmann is an extreme case in point but others take it more prosaically to mean that no better world is even possible. When asked about the after-life Ligotti I think once said something to the effect that he couldn’t imagine any world better than this only worse (here we enter confusion over possible worlds though – surely there is a world in which for instance he worked with nicer people).
I prefer Spinoza's all seasons being alike to God...
Don't worry we can get the same result - try
Optimalism
EDIT: IF people are not already aware of it R.M. Adams'
is the recommended modern account of Leibniz' metaphysics including of course his theodicy and its modal implications. Rescher's
is also a classic.
Edited Edit: is there anyway to stop Amazon links displaying those silly boxes? Edit the Third: thanks for the tip-off