I'd go for the "K" at the end. It's cute :)
A boy lol I just want a unique spelling
What gender is your baby? Dominic is a boy's name, Domeniqk looks like Dominique, which is a girl's name.
I mean, you can name the baby whatever you want, it's your kid. But I doubt anyone is going to pronounce that correctly. It's a very awkward spelling. I'd pick the q or k, not both.