Over all, your plants don't look too bad. The new growth seems to be growing in ok.

Is the dead spots on the leaves where you burnt them with the light?

Leaves that are damaged like that won't recover....but that's fine. A few burnt leaves is nothing to panic over. But be extra careful that you don't burn the growing tops.

I would look into getting a 400 or 600 watt HPS light for your flowering if that's an option for you.