well....you NEED your comm-multi ticket as a minimum requirement, you can't do anything with out it and your worthless to the airlines if you dont have it.

...as to getting your CFI, its up to you, people here will tell you you should get one but i dont have mine and i build my time doing aerial photography and fire patrol and ferry flights, which i think is much better experience, (though people will disagree), gl with whatever you choose