K.L.
We went through the same thing with Jacob, now 7 months old and prefers to sleep alone. My son is very sensitive to light and sound. He needs a dark room and soft music to drown out outside noises. We started putting him in a bassinet next to the bed when we realized that he wasn't sleeping soundly in bed with us. He would wake up when one of us moved or snored. It took some work to get him to settle in the crib. We swaddled him (which he loved) and I would reach in and touch him if he got upset. At about 4 months we transitioned to the crib. However, he did spend some time in there to prepare him for the big day. We put him in there to nap and sometimes play, while I took a quick shower. Now he sleeps well in his own crib but be careful (he relies on his routine of music, a bottle and his crib). I also find I really look forward to night time feedings with him a little farther away.
Good Luck