Any of them will work if you just use a segment or chapter as an add-on to your main workout. If you want to be on the floor, you could just FF Fusion Mix till they get to that hellacious combo on the mat.
ANY tonique can be done in chapters. I recently downloaded the Tonique express sculpts which are 17 and 23 minutes long. Haven't tried them yet, but based on her other stuff (I have all her previous material) I'm certain you'll get a lot of bang for your buck.
Neither of the above, however, would ever count as easy