I made a logo based on the Solo logo, feel free to use it.
I really like this logo. The K and the 7 look closer than both 7s are. I think a bit more kerning between the K and the 7, and a bit less between the 7s would look great.
Or just reduce the kerning between the 7s to homogenize the gap between the letters on the top edge.
A third idea is to do the 4 with the extended horizontal stroke on the back side. This would visually balance the left side with the right a little more, as the 7s create larger gaps along the baseline