Id shoot for temps like 75-80. It looks like you've had some stretching already, this is due to your lights being too far from the sprouts. Try as close as you can without making them too hot. FYI- if you repot those stretched seedlings just cover more of the stretched stem eventually it will turn to root.
Also, my preference would be to add some perlite to that soil for better drainage. That dirt looks pretty thick.