As far as I know the only things that are incopatible between LE and SE mods, are the nif files (meshes). You can convert all these meshes at once with Nif Optimizer.

Nif Optimizer is very easy to use. You simply download the program run the program. Select the target version. Browse for you nif file location. Press the convert button and done. Your meshes (and mod) has been converted from LE to SE or vice versa. Yes, it really is that easy!

https://www.nexusmods.com/skyrimspecialedition/mods/4089