There is nothing wrong with asking here as well, it is gnomoria related and people here may have opinions as well. That said, I am using mostly the same mods (not agriculture extended, so far at least) that I combined myself, there are interesting things to it. However as I have not tried the Skinner pack I have no idea about if they did anything special with merging. In my mod merging there is duplication of menus, crafting lists etc, and there may be other issues. There are issues with the standard mod merging method.