Well, if you get CLB9 on the Writing and Listening section, and already having CLB7+ on French, I think it's near impossible for you not to achieve a 470+ score. But sure, you have plenty of room for improvement in the IELTS department.@jrossi Thanks for thorough answer.
What I mean by "maxed out" languages is French (C1 for everything) and English (Listening 7,5 Reading 8,0 Writing 6,5 Speaking 7,5). Turns out If I work on my English, I could in fact add something to my score.
Still, I have 427 - the gap with 43 points makes it impossible to reach 470 even with another postgraduate certificate and maxed out English. I did not calculate exactly, I just can tell based of my knowledge of point distrebution.
I'll be targeting a CLB7 in French so that I can jump to 511. The only difference between you and me is the fact that I have this additional diploma, and it certainly doesn't add 40 points to my profile
Are you married? If you are, and your spouse does not have a language test, neither a bachelor degree, that can indeed greatly affect your score.