Crib or cosleeper

Rana • Married a year and a half, pregnant with first child.
I want the baby in my room
For the first few months but I'm still doing a nursery because it's fun and she will need it eventually. Do I need to buy a cosleeper to attach to my bed or could bring in the crib for now and attach it to my bed and save on the cosleeper cost. I'm
Getting a convertible style bed so the front comes off. Can cribs also attach 
Like a cosleeper ?