What to replace my workouts with?

So, the past 12 weeks or so, on the days that I wasn't doing TaeKwon-Do, I trained at home following Craig Ballantyne's Turbulence Training. Basically I needed to get fitter, stronger and I needed to burn some fat. I could just continue doing more TT workouts but I want to move on to strictly bodyweight exercises for a few reasons:

1. When my TKD school starts (imminently) I want to make the physical conditioning part of the classes a little different to the general pushups, situps, etc
2. I like the culture of using your own weight as resistance.

The conditioning exercises in the Elastic Steel manual are generally lower body and or core. I also got the Gravity Advantage book from the Elastic Steel site as this is upper body and core.

To keep improving my fitness and conditioning I can't just neglect working out in pursuit of doing the splits simply because while I might become highly flexible I might well become fat (ter)!

Looking at the conditioning exercises in the Elastic Steel manual and the Fundamentals in the Gravity Advantage book there is some repetition. I see no reason why I can't make a full body workout from the GA and ES books to work on say days M, W, F and then work specific flexibility training on other days. I will post what workout schedule I compose, when I do it and how long it takes.

So for the next 12 weeks I'll do this instead of Turbule Training and see what the results are.