Do I need to submit statements from all banks or a statement w enough funds upon Express entry ITA?

[arubix]

1) After receiving ITA via Express Entry , do I need to submit statements from all banks or a statement with enough funds to prove that I have the required amount?
2) Will there be a problem or hassle or taxation if I ended up bringing more cash than stated in the above statement or my PR application ?
For example, there might be funds not liquid (example mutual funds or stocks) that could be available at a later date .
3) Upon receiving COPR and making the landing at the airport , will I have to submit info of all financial holdings to the customs ?