hi
you only have to find someone who makes professionell translations for you and than you should start.
if you don`t offer any incentives to the players for signing up you won`t have much problems with fraudulent traffic
i don`t see any reason why you shouldn`t try to become bigger
maybe switching to revshare deals and don`t risk to lose your cpa deals can be a good way to start (if there is something wrong you can lose the cpa for your good players)
good luck