As long as the site you received your 90+ DA/50+ PA link is relevant and not spam, the link itself should be fine. Receiving links from relevant sites is more important than going after DA & PA. Google is smart. A 90+ link from an irrelevant website will do almost nothing for you in the long run.
Going after 50/50 or even 30/30 back links, as an example, won't hurt your website. Each link you receive doesn't need to be a higher DA/PA than the last, nor CF/TF for that matter. Make sure you focus on getting links from relevant websites. Seeing as your DA/PA is 7/10, anything above 20/20 (maybe even less) is beneficial at this stage, as long as its relevant.