Use the "y" (with the dot) in 48 to make the logo. Extrapolate the "y" in 48 from the word "Lyfe". Have "y" by itself. I want to see what that looks like.
It "y" in Lyfe looks like a person reaching for the sky while moving forward. That's what I like about your logo. Was this the image you were going for. I already tested the logo amongst my colleagues and I'm going to choose this logo at this point.