Point 1 stands, just because there IS some difference between flat patch, where there is some space for plane "birthplaces", and not level terrain.
Point 2 stands, because Il-10 could carry 2*FAB-250,
Have no time to fetch other examples, sorry.
Point 5: These bombs are light (40 kg in dimensions of 100 kg) and could be carried by all planes that carry FAB-100. Some patches ago incendiaries (like АЖ were the only weapon effective for the soft targets covered by the nets)