I just picked up a deleted domain after spending two days searching (my first expired domain find). It has a Moz DA of 40 and PA of 50. Spam score of 4 and over 30k backlinks from 950 domains. My question is, would you 301 redirect the url to a site you want to boost in rankings, or launch a blog on the domain and just send a backlink to your money site? I see several of the sites linking to the domain I just bought have spam scores of as high as 5 but their DA/PA are in the 50's. Just want to get the maximum but safest juice out of this. The majority of backlinks to the domain are international as well.