I think this works out better. I decided to use pluripotent tree cells for the first try and well :) they are all pluripotent. I thought that since trees can live 3,000 years it would be good for a cyborg. What I didn't realize is that the external cells turn into bark and so we have the problem below. So, I just used my own pluripotent skin cells and that seems to be the way to go, why mess with a good design. That one length of HOX DNA has to last a little longer, I think, just a single base pair change should do it. I will probably switch one of the base pairs in a non-coding region by it to maintain thermodynamic equilibrium in that area, just to be safe as I am reducing the pairing strength with that substitution.
Odd what can be done with just the right physics.