It is a bit warm, though temperature conversions are tricky between Celsius and Fahrenheit. It's recommended to start at about 95 degrees Fahrenheit.
Some can hatch more vigorous than others. Toes are often seen as worms I think so they can be targets. I add shiny glass rocks to attract pecking...
How big is your brooder? What temperature is directly under your heat lamp? Can they get away from it? Aggression often has to do with not enough room or too much heat. I'm not familiar with keets either, but all other poultry species are similar in brooding needs.