I have flown 7-8 low-level formation bombing missions to test the sequence, and it seems to flow well. However, it may be too unbalanced, as it may be too easy to destroy a target and you face very little opposition. (I have lost 4 or or five ships though... during these missions.)
Either I will have to increase flak, delete the +2 (1000-3500 feet) modifier or change the modifiers on LLTZ-6 for formation size. Not sure yet how to make it more balanced.