I think it would be easier to have it at the same place- it will be easier for the people who came to the first one to come to the second, you don't want to change places too much (some people on here get confused rather easily). Also in my opinion saturdays are better, sundays tend to be family day or church day or somthing, for a better turn out saturday will be better.
Just my 2 cents.
Already looking forward to it, hope I don't have to work.