http://skyrim.nexusmods.com/mods/25762/
Requires SKSE
You have to give the item to be tempered to the smith, they will give it back and then show the tempering menu. Its a pain but it lets you temper modded weapons as well as keep the mod small. Only give one item at a time or they might get confused and keep something.
This mod should be fully compatible with any other mod as long as they use the vanilla weapon and armor materials. This mod does not change or remove any of the vanilla assets so I don't think it will conflict with anything.
I'm still working on this so balance suggestions, bug reports, and the like are greatly appreciated.