Many things have changed in this area. I would wait about 1 hour to allow my friends to curate and then call for the Promotion Bots. As curators share in the rewards of the total earnings of a post. The first day is highly advised now with anything beyond 3.5 days often being a notice to flaggers to examine your post as possible spam. Early is better and safer. Some have argued that using promotion services is bad. I don't know any great writer that would not promote their content.