Just a random thought but I think SkyUI actually works in SkyrimSE but the search function and mcm just doesn't work, so we don't actually have to wait until SKSE64 to use SkyUI. Not sure, haven't tried it myself but I've seen others use it.
what happens is the mod will start to download and then it says internet explorer can not display the web page for all mods that are about over 100 kb's