I always trim as well i wouldn't worry about it.
In a controlled environment its ok i reckon.
The cfls that are equivalent to a certain wattage are not the bulbs that you really want you need true output bulbs.
If you change your bulbs you will notice an immediate response from your plants.
Cannabis is highly responsive to light,more light always = more bud,not to mention more dense hard buds.
My first grow many years ago was done with 2 normal light bulbs and i ended up with some nice little sticks of white widow that i thought were great.
Now a days i would put any bud like that into the blender
If you can afford it get some more powerful cfls.
You will really notice the difference i guarantee it.
For a first grow you've done great but if you can give them more light do it.
Also try adding some molasses to their water