My friend John Dyer (creator of BestCommentaries.com) wrote a little Bible Reading Plan Generator. It lets you customize what you want to read - traditional order or chronological, OT and/or NT - and when - 90 days or 730 days. You can download the plan to iCalendar. (Not integrated into Logos, but I still thought it might be of interest to some Logos users.)
Click here to go to it.