Gungdo isn't necessary at all. You can easily use the newer builds that still utilize the Sunwuko with EP and WoL. If you don't have an Incense Torch for a weapon, you can still use your Flying Dragon. Just change out Sweeping Wind for a Spirit generator and you are set. Use your generator to build it up and then drop your spirit by spamming WoL. There are certain pieces that can certainly help you bridge the gap until you obtain a Torch, or even create a different type of build. The transition is not a bad one and the newer build is quite a bit more enjoyable than other facerolling monk build.
I put this video together showing gear needed for a fantastic Monk build. At the end of the video I show you some gameplay that should make you feel pretty comfortable with how to move forward from the last patch to the new patch. Hope this helps!