Trying a new Google Blogger Feature - Presetting Time for Publication

We're trying a new Google Blogger feature that allows us to preset the time and date for publishing a blog entry. We think that this may be of benefit to those who subscribe to our RSS FEED due to the consistent time of day we set up. A trial run of this feature in the last week or so has resulted in a concern for us. This involves the font we choose for this blog which is Georgia. We've checked our blog on the net and noticed that some of our posts showed up in a different font, primarily Ariel. So that makes us feel that using this preset may result in an overall inconsistent look of the blog and that it is not safe for us to not check in every day quite yet. Any feedback?