Yes, I used mine around a fire place opening with no problems.
Our brick can be used on entry/porch area of your front door. We do not recommend using our brick on your driveway.
Yes it can.
Your total square feet would is 40. You will need 5 boxes of the specified product, which will give you 43.5 square feet. You can find the cost of all our products including the one you specify on homedepot.com
No black. However, once it's installed and before you add your mortar to the joints you could take a paint brush and black paint and brush over select bricks.
Yes it can be adhered to a concrete wall.
This product can withstand those temperatures with no problems. If you use a modified thin set or our Old Mill Adhesive you will see no problems with it holding up in the future.