Hmmm
Whilst the Che Wei Ming, is a little bit of a treasure trove, its not really a good book to learn from. For contemporaru Yang Taiji I would have to suggest without out a doubt Dr Tseng Ju-pai's Tai Chi Weapons as it also contains Taiji Broadsword, Halberd, Spear and staff routines. He too studied under Yang Cheng-fu like Chen and so maybe using both books would bring about some very clear clues. Of course as has been stated they are totally for Yang style Taiji.
" Don't confuse yourself with someone who has something to say " - The Fall
" I do not like your tone/ It has ephemeral whingeing aspects " - The Fall
" There are twelve people in the world/ The rest are paste " - Mark E Smith