Hey GW
I....Do Not... have any experiance with this particular cedar , I do have a couple of Deodor Cedar in the ground.
I think you would be safe wiring it anytime. I would caution ,wait until spring to repot. Even then, give some thought to , Is the trunk as big as you want it ? It's sure not going to grow very fast once it is in a Bonsai pot.
Sorry , but the mms are lost on me , It may be a huge tree for all I know.
All the Best.

Sorry Ryan I missread , your name

Thanks for that Dave, sorry I'm in Australian, work in the metric, its about 1 foot 6inches high & the trunk is about 3/4 to 1 inch thick. lower branches are about 1/4 inch thick. Its just towards the end of our spring now so I might wire it up & leave it till next spring. what is the usually a good period to leave it wire for it to affect the branch structure enough so it will hold its position.

Cheers mate

Ryan

Ryan
You can still wire it , just keep a close eye on the wire , as you are going into your growing season. Your tree ,hopefully will be growing , inside those wire coils. You don't want any ugly wiring scars. Maybe wire a little looser.
As to how long , I don't think there's a set time . I usually just leave the wire on till it starts getting snug, then cut it off . If the limb stays where I want it, I'm in business, if not, I rewire it.
Sorry for my ignorance of the whole rest ot the world and the metric system
G-Day Mate