I think the question you have to ask yourself, is why make it more difficult for yourself? For the sake of having to do a PFL, I would do it on SEP. I am assuming you don't have a MEP rating? Flying a twin is not hard, but will give you other things to think about on your CPL skill test.
I would do it in a single, and follow on with the MEP and multi IR, if that is what you are going for.
Good luck.