doesn't look the best, sorry to say
WTF? A comment like that is completely unhelpful and discouraging to a first time grower. If you're going to say something like that, at least give him some advice to move forward with. What is wrong with you?
Manigethigh, don't sweat it. No one's first grow is "the best." You're doing great, man. Your plants are looking nice and healthy and you're on the path to getting some smokable bud. The goal is always to get the biggest and densest bud that we can. We all do our best with what we have. But to answer your question, yes, more light will give you better results.
How close is your light to the tops of your plants? Forget what anyone says as a ball park distance in inches. Put your hand over the tops of your plants, and move the light as close as you can until your hand feels uncomfortably warm. That's too close. Back it off until it's comfortable again and leave the light there. Check every once and awhile as your plant grows bigger that you don't need to move your light up again.
The closer your light is to your plants, the more light your plants will get. The more light your plants get, the bigger and denser the buds will be. So definitely yes to the 70w light. If you can throw in your 70w and keep the heat manageable, it will only help. Good luck.