I'd love to hear your thoughts!
Two specific issues I'd like to draw your attention to:
1. I'm not in love with the vertical serif in /c/s/z. Do they bother you too? Do you think this kind of design could work with no serifs at all in these letters? Perhaps you've got another idea?
2. The four serifs in /x and one serif in k/ have one side a bit thinner (so it won't look so crowded). Does that make the serifs look out of balance, as if they're not exactly leveled? Does it make them look higher/lower than their counterparts in other letters?