Hi
ajarupan,
I really, really hope I'm wrong... but the documents they requested from you - for me this list indicates that they are looking for another ground for refusal. Like "you did not prove that you're going to reside in Canada after your husband's PR approved."
I don't know where you live now. If you are currently living in Canada, this is not a problem at all. just send them what they requested. But in case you don't, be very careful and submit as much proof of your residential ties in Canada as possible.
I am paranoid, I know. But sometimes this helps.
Again - I really hope I'm wrong, and all this is just a routine check.