I read people say the same things online. And after my first grow, I thought maybe they were right. So I wanted to try again, and so far I'm happy with the results. I know I could get more with HPS or LED, but not everyone has the budget for those lights, fans, or the cost of the power.
One big difference I see is HID or LED systems can help produce more trichomes, but my Power Flower works and does exactly what it should do when smoked. I have no regrets about growing with CFL. From what I read online, it seems the average CFL yields people are getting are 7-20 grams, and I have above average, so I would say it's a success.
And yes 8 grams is very good, especially if you don't smoke much, it's also a great feeling to sit down and relax, and smoke a little of your own plant. It's a great feeling after all the work you've done.
For the first grow, always just focus on learning how to grow a healthy plant. Some training is good to work on too during the first grow. Once you learn those things, a good yield, and quality Cannabis just follows. After the first grow, you know what to do for most things, so the second grow is easier, and allows you to do more for training, lights, etc.. since your focus is more on giving the plant what she needs, instead of worrying about the plant dying lol.
Keep on going, you're doing great for a first plant!