As far as training in the USA is concerned:
For a rotorcraft CPL 150 hrs Total Time required of which 50 needs to be in rotorcraft.
Which means you could do one of the following:
- PPL fixed wing
- Instrument rating fixed wing
- PPL heli add-on
- CPL rotorcraft
or
- Fixed wing CPL IR Single engine and Multi engine
- Rotorcraft CPL add-on.
Advantage being dual rated fixed wing and rotor craft.
Might make it a little easier to get your foot in the door for that elusive first paying job.