Welcome to WriteWords, Trixie
It is difficult to judge such things, but if you find your SAEs winging their way back to you within the week then it's a pretty safe bet that they are clearing their desks and haven't read it, so don't be afraid to resubmit in a couple of months. I've found they often clear their desks in the run up to Christmas. And have read agents blogs where they say January is a busy time for submissions because that's when writers send them in as part of their New Year's resolutions. Presumably they are geared up for the January rush and will get round to them eventually.
PS. We have a Synopsis & Outline group if you'd like help in brushing up your synopsis before sending it out.
- NaomiM