Are you getting them for free? Seems an unusual choice of size.
Both 15" so OK
10 mm narrower tire than what you have but OK. As long as the rim will handle it.
2" less diameter so the car will sit about an inch lower and your speedo will be off so at 60mph your speedo will read 65mph. Acceleration will improve slightly but top speed will drop. Great for 1/8 mile drags.
It will work but you might not like the end result (or maybe you will. Who knows?).
You might also check the load rating of the new tires. They might not work for a 3000+ pound car.
Good luck!