Solar/Ground Source Combo Seasonal Climate Control

I'm trying to design a passive-ish climate control system for my new place. The location is hot-summer humid continental without dry season (-40 to +40C, 20-100mm precipitation/month, 60-75%rH, 110-350 hrs sun/month at 40-75%).

I intend to have a big greenhouse for a collector that will also house a seasonal climate battery in the form of a 55,000 liter pond. The greenhouse will need to stay above 4C year-round (design still in progress). In addition to the greenhouse, I'm looking to manage the climate of an 8m2 passive solar house (to about 18C year round) and (maybe) also supply some thermal buffering to plants in an enclosed garden between the greenhouse and the house.

I would like to use the simplest, most passive, low-maintenance, off-grid systems possible. I'm excited about ground-source temperature stabilization such as shallow "air tubes" or the horizontal loops and actual geothermal. I'm also enthusiastic about above-ground stuff like thermal chimneys, trombe walls, and solar-oriented glazing. I want to run the water tubing through the floors of the house at least, plus a tank for domestic heated water supply, and through the pond for heat storage. I want the air mostly for ventilation and humidity management in the buildings.

My basic idea is two big solar collectors (greenhouse and house) on two different levels with a big pond and a walled garden in between to serve as a climate battery, big air/water loops from greenhouse to house and back to move that heat around. But it seems like, as long as I'm trenching between the greenhouse and the house (under the garden), I might as well run both air tubing and water tubing. As long as I'm building solar chimneys and solar walls on the house, I might as well run both air tubing and water tubing in them too. So, there'd be similar climate needs on both the ends of the loops, with thermal mass in the middle for seasonal heat storage. But I haven't seen or read of anyone who's done both together and I can't be the first person who thought of it? Is it the expense of buying/laying both sets of piping or something more complex?

And, I'd be grateful too for any help people can offer about my overall concept and how to engineer it into reality. Thanks!

Wow, so many ideas its very hard to read.
Thermal mass is the best start, coupled with double glazed south facing windows to heat the thermal mass.
I use a thermal chimney at my place.