i'd say give yourself about a month to do this, as testing will need to be done, and then there is no rush, if i were you i wouldnt set a specific date of release however.
for the italian structure i would have this:
Premiership
1-4 Serie A
Championship
5-9 Serie A
League 1
10-14 Serie A
League 2
15-19 Serie A
Blue Square Premier
20th serie A - 3rd Serie B
Blue Square North
4-9 Serie B
Blue Square South
10-15 Serie B
When it comes to non-league i would carry on suite like this e.g. unibond leagues etc. have 16-18 in serie B then in the southern equivelant have 18-20. if you understand? | 
