First congratulations! you don't need to explain to me how you feel. i was exactly in the same situation a few weeks ago. Be very very careful on what your decision is going to be. Only you know what is best for you and your babies. Talk to a high risk OB. They will tell you all what to look forward. Keep in mind having a set of identicals with a singleton, is not the same as having 3 fraternal triplets.
If you want more info off line let me know.
I wish you all the best. you are in my thoughts.