New job and income, change in application-AINP family stream

[Cocacola]

Me and my family applied for PR, AINP-Famlily stream a few months ago.
A while ago I e-mailed AINP and asked on what aspects they look at when giving out certificates of nomination.
The answer they gave me was that it will be issued based on all aspects of the sponsor and candidate eligibility requirements as well as the labour market needs of Alberta.

So, when I applied I worked as an assembler, industrial worker, with a mediocer salary.
But since then I have got a much better job, and 50% higher salary. So, should I bother changing my application, and what documents should be enclosed?

And, should I do it right away or wait until I have recieved notification of assessment?

[S.K]

Write a letter inform them about your new job and send them a copy of the job contract showing your salary

[Cocacola]

But when should I do this? and will it affect the time for processing my application?