If my husband files for annulment is there still a 20 day wait period and can I have an attorney delay the final judge signature?

Well, it's not so much a "waiting period" as the time within which an Answer or other responsive filing must be made.  And if there is anything contested in the case, it will take longer than 90 days to get to "done."  For an overview of the process and a flowchart of the steps involved, see http://www.willicklawgroup.com/divorce/. But your best best would be to consult with a family law specialist as soon as possible.