Hi Karen! I'll be doing RevtoRev next year too and am so excited!

There are not specific time allotments for RevtoRev yet, but in general, it will take around 4 1/2 hours. It also will parallel RTR's time allotments quite closely in many subject areas, though science will be more lengthy as it includes the "Inventor Study" and "Exploration Education" physical science. The poetry will also be more in-depth, as will the primary source documents. Whether students are doing the "State Study" or not will also effect the time allotments. But, in general, RTR's guidelines will help you get a handle on how RevtoRev will go...
viewtopic.php?f=6&t=7138&p=51937
Specific time allotments will be given for RevtoRev at the release of the guide. HTH in the meantime!
In Christ,
Julie