ᐅ Geothermal energy, solar power, and a water-heated fireplace?

Hello everyone,

I have already asked a few questions here and followed many helpful discussions. Now, unfortunately, I am again at a point where I would like to hear the opinions of other homeowners.
First, I must say that I have absolutely no experience in heating technology, so if the following combination is complete "nonsense," please don’t be too harsh 🙂

We are planning to build a single-family house with 190 sqm (2,045 sq ft) of living space. After much consideration, we would like to use a ground source heat pump with underfloor heating. Since we also own a large piece of forest, we would like to add a water-carrying fireplace.

Our builder has proposed the following heating system:
Underfloor heating with individual room controls
Junkers ground source heat pump STM with integrated 185-liter (49-gallon) hot water storage tank (1-2 boreholes)
Solar system from Junkers for geothermal support, including a 400-liter (106-gallon) heat pump storage tank SW 400-5 // 4.74 m² (51 sq ft) collector area
Water-carrying fireplace
Possibly a photovoltaic system to support the heat pump?

This sounds completely excessive to me, and I would also like to understand how these different systems work together.

As a layperson, I imagine lighting the stove in winter to possibly heat the hot water, and if the stove is off, then the ground source heat pump or solar system would take over.
To prevent the heat pump from consuming too much electricity, a photovoltaic system would reduce the power consumption...

Does this make sense?

Thank you very much in advance for your help...

Solar power has no place with heat pumps, despite the so-called "heat pump storage tank." It is never profitable. A water-bearing fireplace is also pointless, unless it is for an older building or the sole heating system. If anything, add photovoltaic panels and use the electricity as efficiently as possible yourself.