No, this is not a good swap as the 215/65 tire is almost 4% larger in diameter. Your speedometer will read 57.6 at a true 60 mph. A much better swap is to go with a 215/60-15 which is a good swap. Your speedometer will read 59.5 at a true 60 mph and the 215/60-15 tire will only be 0.17" larger.
Yes, you can
Yes, if you mount as a pair. Both tires on axle must be the same
Possibly, check they don't rub anywhere while steering.
NO, rim size is incorrect.
195/70-16 or 215/65-16 are both acceptable substitutes.
Yes, they can
Yes, you can
Yes, that is a pretty good substitute.
Normally. yes.
You can substitute these tries if need be. But if you do this your car will be off balance.
no there is too much height difference
Sure, if you change all four; the difference is about a quarter of an inch in diamater.