After my test with more sqn's in one base i know that this is not good idea. Bette is add more AB them more sqn's in one AB.
Actualy i do a British side.
I found wery cool www side.
http://www.rafweb.org/Maps/Coastal1939.htm
Now i do the AB same as on this www.
After that i will try do US, CA, IT and Luftwafe basses.
I set a planes to AB, and each AB is different.
Small are for short range planes.
medium have medium range planes.
Large have long range planes.