Well, I never managed to bend the lower or top masts, or their yards.
Topgallants and above, I'm not sure that it might not be easier to set up RTV moulds to the kit parts and cast them with steel or brass rod for the cores.
Worst parts for breakage (as I remember it) were the pole mast above the 'flying' royals, the 'flying' jib boom, and every stunsail part bar none.
Were I doing an OOB, I'd leave off topgallants and royals and the flying jib boom, and all the stun'sail parts, and rig everything else first.
Mind you, Connie was the first kit i tried rigging "backwards"--that is starting from belaying pin to the other termination. This tends to take excess pressure out of the process, and also keeps ham-sized mitts out of spaces crowded with breakable bits. not perfect, not imperfect, either--just something I do/did.