I lowered my bike 1" last year, I also bought the Soupy's links. I brought it to my mechanic. He said he had to shave off part of the lowering link in order to install it because it was too wide. He also shaved down my kickstand and welded the bottom back on.
If you're gonna do it, I'd definitely recommend having a professional install the lowering link. If you don't want to cut the kickstand, you can also buy an adjustable one.