Glad it worked out well for you. I have considered some sort of sleep training--DS (now 10 months) requires nursing to sleep at naps and at night. He started cosleeping with me around 5 wks and will not sleep alone. Sometimes I can sneak away after getting him to sleep, but more often than not, his sleeping = my being stuck in bed with him, and it is frustrating to be so tied down.
I think the biggest reason I haven't done it is the AP argument that CIO shuts down communication between parent and child, but you haven't reported any emotional distancing of your LO, so maybe it's not really an Issue...