More Clowns?

[GreenSpottedPuffer]

I have a pair of Percs in my 200G hosting in a Bubbletip on the left side of the tank. My fiance and I would like to get a pair of black clowns as well. Is this a big enough tank for a second pair?

The pair I have are about 1.5" and 1" respectively. They rarely leave the left side of the tank where there nem is. Just sometimes when they are hungry.

What are the chances they would fight? What are the chances the new ones would host something on the right side?

Would it be best to add another nem on the right side...I really don't want to but may consider it I guess.