personally I'd sell both because I'm a lazy fuck and don't like having to deal with headaches, so free and easy money is welcome
Also, I've never heard of news blogs before, you probably meant news site, in which case I would sell it because I feel that people tend to either go to mainstream media or to their favorite (niche-y) person to get their news. News blogs (especially if your visitors don't know who you are) have hardly any credibility, so even if you get clicks through on your site, I don't think you'll manage to make a lot of money with it since you don't have lots of traffic and your traffic is also not targeted to anything in particular (unless, it's a niche-y type of news site).... But like I said, I am speaking about news sites here, I genuinely don't know what news blogs are so feel free to educate me
Regarding the crypto blog... I've just learned a few days ago from someone I trust that blogs are dying because google will prefer ecoms and business websites moving forward, so if you feel that you have the time and motivation to attach a store or a business to your blog you can give it a shot to see how it does. If it's profitable, keep it, otherwise out with it...