1. yes should work with the scale option
2. if you dont plan to make a lot of moveing stuff than it should work with no problem, look at the finished games with C2 to get a better view what can be done.
3. No problem to make there is a tutorial for that too
4. can be done, read the tutorial for mobile screen optimazing
5. can be done with the IAP plugin (included in C2 persornal and business version)
6. sounds great
7. can be done with different layouts and so on, there are some posebilitys for this
i hope your questions are answered now