Xairete all,
I'm new to the forum and more Greek than Latin oriented ( : but...
Don't forget to post places like Latin and
Greek study groups (where you find both LatinStudy and GreekStudy which are there lists)
http://www.quasillum.com/latin/latin-activities.php
and Textkit to acquire more potential students,
http://www.textkit.com/greek-latin-forum/
as these places typically run longer study groups like that which will be required for a text like yours and have a large mailing list of potential students who could enrich your group,and who might be interested in this community.
I don't know what your proposed format will be but you can get the visual runtime software from Latin Study Lists if you intend to do collations.
I personally like live Yahoo group type chats for study groups and have found that to be the most effective method to actually discuss grammar in depth or to discuss the text as a text.
For sharing translations, collations are good.
I participate in a Bacchae reading group for the GreekStudy list and we have collations that we send to the main list and then have another yahoogroup set up for discussion.
no chats for that group.
I cannot participate in any Latin readings, as I am only doing Greek and Egyptian at the moment ( : but I can give anyone who has not led study groups before tips about how best to go about it.
Check out my message for a New Attic Greek group for beginners over on the main page here.
Also here's a link to the Museum site for Augustus' monument, which might interest you it has images of the reconstructed altar.
http://en.arapacis.it/museo/editoriale
good luck with your project.
best,
Karen