So soon I'm getting a tattoo to say live without regret. I've pottered around on the internet a bit and found
Sine Paenitentia Vive / Vive sine Paenitentia for this. I assume this is correct.
I also want to pair it with the all too cliché Memento Mori, the previous line sitting above this. Would there be anything syntactically wrong with this? As two phrases? As a sentence with a break between them?