Reset GID/UID auto-increment numbers
Solution 1:
According to the man page (http://linux.die.net/man/8/useradd):
UID_MAX (number), UID_MIN (number)
Range of user IDs used for the creation of regular users by useradd or newusers.
I'm pretty sure that if you set UID_MAX in /etc/login.defs to 5554 you will get the behavior you are looking for.