I wouldn't use that many negatives in case it overload and mess up your cash. 1mil+ cash is more than you can ever need.
Any changes to the AoB of 3 units collection is more than good enough.
Also should check out this thread Social Empires Cash Hack
choose your collection, and replace everything after the 5b 2d with 39 39 39 till you reach 5d. That's in case you finished off some of your collections already, then there are more choices. There are also some legit-looking amount of cash gain if you want to be cautious and avoid ban.