I have nothing against you improving all of your old posts serially: personally I wouldn't even mind having the active questions page flooded with your edits at some point but indeed someone will do, so maybe keep the number of edits acceptable in function of the current activity (to be clearer, just avoid making the active questions page become orange).
I think an edit of yours per 4-5 other posts (in average) in the active questions page would be largely acceptable by everyone.