As soon as the snow melts and before green up is the best time to learn a property. Scouting never ends, but looking at buck beds, and patterns, as well as setting up stand sites should already be done.
I would recommend keeping the cameras away from your treestand positions. Mature bucks don't get mature by walking in daylight where human scent gets deposited on a regular basis. Stay away from your tree till its the right day to kill him. Put the cameras back on the field edges.