As far as I remember (haven’t done AVR-77 in quite some time) the import was quicker than Animation, but I don’t remember the render out of AE being all that different. I guess some testing might help.
You may already be doing this, but I recently was taught how to stack several output modules on one render in order to save out to various codecs. It takes no more time than rendering one file, but when finished I end up with various flavors of quicktime for whatever purpose.
Instructions: Make Movie to the Render Queue, where the comp will be in line with the default Render Settings and Output Module. In the Compositions pull-down menu select Add Output Module and adjust the settings for each output needed. Recently did a logo fly-in with Alpha at the beginning to send to a Meridien and an Xpress Pro DV. I saved out Meridien 2:1 full over a black BG, Animation with Alpha Unmatted, Alpha Only, Avid DV with a numeric crop 2 top 4 bottom ( 486>480 high), Animation/Alpha Unmatted with same crop, and Alpha only with same crop. The blue render bar went through once and when finished I had six QuickTimes ready to send off to my client. Took all of 10 minutes . Before this I would have rendered each one out separately – an hour!
Good Luck!
Dave