Light spectrum

I want to start growing autos I only want to grow 2 or 3 at a time with cfl I read that autos like mixed spectrum the most so my question is if I have a 250 watt 27k cfl what would be a good mix if I was to incorporate a 65k cfl like how many watts of 65k will I need to mix in for my plants to grow nice and healthy

The more light the better no matter the type. You obviously are aware that the different temps are used to veg and to flower. Mixing is not a bad idea on any including autos. And most get better results using more 40-watters. Less heat and easier to get better light coverage. Total wattages as much as you can run and cool for the best results.