Here is Q wise reply
1. It might be HOT but not expected to fill as early as the ones which were open last year, so you can give it a try but need to start your ECA asap. Most of the ppl in your category would have started couple of days ago, so u have a change. Ask your friends/relative for help. Especially, given you MS from US Uni it should not be that difficult (i suppose)
2. For a family of three $18,097 Canadian required. visit cic.gc.ca/english/immigrate/skilled/funds.asp
3. WES is supposed to be fastest, check eachones website for estimated time depending on their load at that time.
4. If your uni website says that admission in MS is only after 4 yr BS degree, then you can do away with it
5. No Experience
6. NO
7. General IELTS