Should work fine. Overkill for batch sparging, but good for fly.
Any reason you ran the drain on the side not the front?
You might add a few capped T's on the sides to keep it from sliding around. Or some other method.
Mine are cut with a hacksaw, so about 1/16th inch or so, with 1/4 inch spacing. Cut 1/4 to 1/2 way. I've seen people drill holes too. Slots facing down. Don't solder it together.