It does seem like a lot, @kaerpediem, but most are pretty quick. For the two accounts I do:

• share2steem 10-14 a week - these take 5 minutes each once I have someone's post I want to promote on twitter. I try to do these as soon as 24 hours is up from the last one, and keep an eye out for good posts, so I do not have to hunt for them.
• photo and food contests and challenges - 10-14 a week - these take almost no time for one photo or maybe 1-2 hours for a lot of photos.
• @tasteem restaurant reviews 4-5 a week and rising - these take maybe two hours not including the eating part lol.
• freewrite 6-7 times a week - 30 minutes including the poster I make
• ulogs a few times a month when I have something to say - varies in time
• dApp reviews take longer a few times a month
• minnow tips posts can be quick or long a few times a month

I'm always looking at the time so I never post before 2 hours is up from the last post on each blog, and no more than 4 posts each day on one blog. I'm also using:

• busy
• esteem
• share2steem
• ulogs
• tasteem
  so each of those has to wait 24 hours from the last post.

Whew! Now I'm tired lol.