Sticky ~ The positioning of your plants looks fine. The bulk of the lumens from a household type CFL comes mostly from the side. When I was running similar CFL's, I rotated the plants 1/4 clockwise turn on each watering/feeding day. They seemed to like that.

Lots of folks, way smarter than me, recommend mixing the spectrums for both vegging and flowering when using CFL's. You just want to have more bulbs in the blue range for vegging and more bulbs in the red end of the spectrum for flowering.

Good news on your PH. I started out using the drops/test tube type, then went to the paper strips, with different results, and finally broke down and got a digital. No contest, the digital wins and the plants definitely show the difference.

I'm anxious to see how your Lowriders turn out. I've thought that was a strain I might like to try.