I wonder if woodlovers would like the caapi vine...
Your ideas sound interesting and at least in form of an interal ecology I can definitely relate to what you have in mind. I'm not sure how this relates to anything physical that could be measured other than by the measuring-apratus-human, i.e. through subjective experience but that's beside the point.
Technically I wonder if the caapi would be nourishment to the mycelium at all, how easily it could decompose it ect. In the worst case you will have a bunch of dead-weight in your substrate that the myc couldn't eat. maybe the collonies will survive, maybe not.
I think you should go for trying it. Not sure if you woudl go for woodlovers or regular cubes. I find growing mushrooms a spiritual and scientific practice at the same time. The idea of cultivating things that alter my mind, feels like one is already cultivating the alteration in the mind by ones work with them. so from an internal perspective I can see how keeping things in the cycle for as long as possible would be nice. It's all energy of an internal nature towards the improvement of the spirit, that is to say, thoughts cultivating thoughts whith positive intentions...
As I've said, I don't know if there is a way to measure this out, if there is external validity to this energy, but if it is a psychological energy, a spiritual one, then I don't see why we shouldn't equally follow this idea to cultivate ones inner life. The mushrooms in themselves may never be different from others, nor your trips with them, but the quality of your relationship to the use of entheogens itself is diferent when you are growin your own, that's all I can say. That's why I'm generally open to this idea. I find that one can easily mirror ones work with plants or mushrooms with the work that one is doing on ones own spirit or mind, a kind of inner gardening. Here anything goes though - any kind of symbolic relationships you have, they all come to baring on this inner landscape that you are the architect of.
The real question then is can this step of looping the caapi energy back into your other gardening projects be manifested in physical reality and how well would it perform? I think you will have to try this for yourself. I would be very interested in hearing the results. If it doesn't, if the mushrooms don't grow well on it at least you can still compost it and so re-introduce its energy at least into the cycle of your overall garden.
sorry if this was incoherent...
much Love from Someone Different
...Enoon