Hello urchandu,
1- I think it's Buffalo. You can check link to confirm:
http://www.cic.gc.ca/english/information/offices/apply-where.asp2- you have to try to submit all letters up to date, if you cannot provide these letters as you said, you need to submit the old letters but you write an explanation letter on the reasons. This is mentioned in the VO specific guide.
3- funds should be liquidatable and convertible, I think stock should be ok. Read what CIC defines as funds: "Indicate the amount (in Canadian dollars) of unencumbered, transferable and available funds that you have. This amount can include the value of any property that you own, but should not include jewellery, cars or other personal assets."
4- No. You are pre 26 June, hence, you are not part of the cap.
5- no, at all.
6- Maybe. We've seen people had their employers called while others not.
Good luck and cheers