Actually the most important thing is not what your home will sell for.
The most important thing is the division of your assets and how you and your spouse are going to work out the future. A common mistake of homeowners through the divorce process is not dealing with all the details of the divorce first and the house later. I have seen some ugly outcomes where the house is put up for sale first before things are worked out. If after you both have discussions together and with your attorneys that this is the way to go then go for selling it.
As far as pricing goes I have a home not to far from you in Talmadge. To say that we are close to 30% off the peak in places like the SDSU area is not an overstatement. So if you want to swag things then take your appraisal and knock 30% off of it. Also recall these are for sale homes and just because they are active on the market means they will actually sell. In fact the intuitive person would say they will not based on market conditions.
Alternately go onto zillow or sdlookup and look at comparable homes in your area for sale and gauge them compared to yours. This is a poor mans appraisal. Obviously the best thing to do is to get a qualified appraiser.
My one last piece of advice is that if you think things will turn around in 2009, I would heavily disagree. I think we may see a small rally in spring of 2009 like we say in 2008 if you want to call it that. However we could indeed rough seas after that due to another wave of foreclosures.
I don’t mean to be overly pessimistic, just realistic.