Personally I discourage the use of Waste Not. It prevents you from using your ToT procs and if you use your ToT proc with WN up, your dura calculations get screwed.

My first Lucis tool run I got 20HQ with 6NQ (traded it back for the mats). The % is actually quite forgiving compared to the 4* turn ins. Crappy % like 50-60% still yields you a HQ turn in frequently. Took me like a hour total, in between waiting for queue for WoD to make one Lucis.

ToT procs and Manipulation is your friend here.