"He deposits 54,000 of which 27,000 goes to pay our mortgage and other bills. He thinks of that I should recieve 18,000 because that would be sufficient for me with my 20,000."

I don't know how alimony would play out in your area, as it varies greatly from state to state, county to county, judge to judge, and even day to day. However, since you have 2 homes, and you are apparently excluslively living in one, the entire $54,000 is going to be considered alimony. Also, if he clears $170K a year, he would have to make more than $200K. Often alimony will ordered for a lifetime in a long term marriage, but since his retirement is not far off, and you are already getting half, his income is going to drop tremendously a couple years from now, and it will be reflected in the amount of alimony. Does you attorney given you a ball park figure?