I tried with the same setup (10.0.4 and AMS 0.14.2) and I have those two issues as well: BOTW is stuck at the very first loading screen and SSBU is stuck at a black screen with music on the background after selecting the stage and fighter.
I've removed the patches completely and copied them...
You need to install the DLC using the retail disc/eshop version. Once done, you have to extract it using DDD and then copy the aocXXXX folder to your SD (together with code, content and meta folders).