I had the same situation happen to me. I hyperstimulated when I did a fresh cycle so we had to do a FET instead of a fresh implantation. We put 2 in and I think that made our chances good but it is true what Hoping4_2 said that you have to be comfortable having twins if you want to put 2 in. I am a good responder to everything so I felt good putting 2 in but I was also alright with having twins. You definitely need to talk to your partner and talk to your doctor.
My thought on it is that if your embryo is going to implant it will implant regardless how many you use. The tricky part is, if they use the one that will implant or not? This realy is a decision for you. I personaly have always used 2 and w/ my FET if all 3 make the defrost I will use them all because I don't see the point in paying to store just one. But, if you feel like you will try again, if this cycle does not work, then you might consider just using 1 or 2. Just depends if you feel like you could handle triplets or twins. If you don't feel like your body can take it, or you personaly can't handle it, I would'nt take that risk. But again, I believe this is something for you and your partner to discuss and decide together.