Mity Oak No 115

I got this stove relatively cheap a couple months back and have been working on prepping the area where it's going to be installed. As I get closer to install, I'm wondering about a couple things.

1. Does this particular stove need fire bricks around the inner perimeter? I bought a bucket of cashable refractory cement to potentially make some custom shapes, if need be.

2. The third image shows the grate for the bottom of the stove. Anyone know of where I could source a new grate?

Any other tips are welcome and appreciated!