I had the same experience like you but now am happly married with a different woman with 3 boys & 2girls. The advice I recieved that helped me in making sound decision I want to share with you.
1. I was told by one advicer that whatever love I have with this AS woman will disappear as soon as one SS child is born. I was also told that the pain of disconnetion is short lived but the joy is long lasting.
2. My medical doctor said to me on this issue that your SS child will hate you both parents for not considering his/her feeling before getting married.
3. The financial cost in taking care of SS child, emotional pains of seeing your child suffering in life and guilt conscience that you both would have solved this problem had you parted ways would torment you through your married life.
4. My doctor earlier, shared a experience with me of 2 married AS medical doctors with all their children SS. It was love at first but now it's pain. That sometime all the children will go into crisis at the same time. That the doctors were tired.

So, I made my decision in 2005 with the help of Jehovah my God and I am happier.
Please, make sound decision for your tomorrow.