tl;dr: Having fewer sites to deal with seemed like a stronger idea. I still wanted to feature the richer content over the smaller tidbits while also not overwhelming people who had subscribed in the past. I also took into account trying to make it relatively easy for people to subscribe to the particular data they want/need out of my website. My home page has a list of various post kinds available which may be useful to think about as well.
@mrkrndvs has played around in this area of aggregation as well with a few different websites and may have some insight too.
Whatever you decide, be sure to have some fun along the way.