Hoping to catch lighting in a bottle again

My wife and I need a little advice. We are adoptive parents to a wonderful 2 yr old, that we adopted in April 2002. We feel that she was a miracle for us, and we would love to find a brother or sister for our little whirlwind :) but we are unsure where to go now that our agency has called and said "No new adoptions and they don't see this changing anytime soon" (We live in RI and this is a local agency that we are dealing with) We started our adoption journey with the state DCYF program, after a year of waiting with them with nothing occuring we started to consider looking into other agencies. We started an interview process with about 20 agencies to determine the best one for us and quite frankly one that had the birthparents best interest in mind. After having two adoptive friends both indepently suggest one agency, we chose to call them. To make a long story short, we were a perfect fit for a child they were trying to place at that exact moment. Our little miracle was in our hands less than one week later. It has been a wonderful two years since, and we are hopeful that we can find a sibling for Magen. Here is the issue; (Sorry it has taken so long but I feel that it is important for you to know a little bit about us.) We have now been waiting over a year with the same agency, and they recently called to say not much has been happening. My wife and I both feel that agency has turned it's attentions to foster care, a very admirable position but .... well, what do we do now? Start to search for another agency? We are thinking of posting our profile on parentprofile.com; We do have an issue that I'm afraid would severly hamper our attractiveness and that is age, Dad is 37 and Mom is 46. BTW - Mom is stay at home mom, and looks/acts like a young 30yr old. No one believes her when she tells her age.. I'm truely a blessed man :) anyway, back to my questions ... Do bmom's really look there? Open or Closed - this is a tough one, we really tried to get Magen's parents to have an open adoption but they didn't want to do it, so it is closed. We prefer open for the second child but we are unsure about the potential problems between the two children. Is it ok to say that we are open to either? We don't want to sound insincere and dishonest. Any thoughts and comments would be greatly appreciated. I guess part of me is scared to do anything as we felt that it was fate that brought Magen to us the first time and we are really hopeful it will happen again.. that is we would catch lighting in a bottle again.... :)