Well the OP is asking for advice. If OP wants to do it it is their choice. Just offering some help to maybe help them succeed if they choose to do so. There are other posts on this forum where people have done it and I have seen it done too. If OP decides to do it then what I would recommend is to take the pair out and rearrange the tank decor and either add the odd clownfish first and then the original pair later or all at the same time. I would also break up the sight lines once they have established territories or before, so they have minimal viewing of each other and hiding places. Also a busy tank can keep pair occupied too and divert their attention from odd clownfish. If tank is small I would not do it.
In the late 80's early 90's SPS coral were considered impossible to keep in the home aquarium. Now the impossible is a reality. I do not know how much experience the OP has in this hobby and if OP is new then I would not recommend it just because of the dissapointment they may end up with. I personally have never done it but people have.
I wish the OP success if they decide to do it and I'm only giving them advice to help accomplish it nothing more.
If it does get ugly and OP can interveine then a backup tank should be ready.