Is there a limit to the number of self.AddAlpha(Alpha1()) you can add to your algorithm? I saw a note in one of the Documentation sections that indicated two but have found other references where it said as many as you like. I am asking because I am starting development in earnest and need to understand the limitations of this framework. 

Also, does anyone know if you have to pay for a Live node to put your algo into paper trading mode? My algos trade only futures and options…might make a difference.