u shoudl have only gotten 2 in teh fisrt place cuz they will proablby mate... onec you get a lot more live rock i would add like some kind of swarf angel IMO those things are really cool like coral beauty, flame, bi color, bluefin, multi color, etc, etc
i would not get two different species of clwons beacsue they will almost always fight and kill each other... even if they are the same species.. and u get more than two they will fight and kill each other unless you have a huge tank which u dont have