Geothermal energy, solar, and water-bearing fireplace?

Hello everyone,

I have already asked one or two questions here and have been able to follow many helpful topics. Unfortunately, I am once again at a point where I would like to get the opinion of other homeowners.
First of all, I have to say that I unfortunately have no experience in the field of heating technology, so if the following combination is absolute "trash," please don’t be too harsh :)

We plan to build a single-family house with 190 sqm of living space. After much deliberation, we would like to use a geothermal heat pump with underfloor heating. Since we also have a large piece of forest, we would also like to use a water-bearing fireplace.

Our builder offered us the following heating system:
Underfloor heating with individual room control
Junkers geothermal heat pump STM with integrated 185l hot water storage tank (1-2 probe drillings)
Solar system from Junkers for geothermal heat, incl. 400l heat pump storage SW 400-5 // 4.74m² collector area
Water-bearing fireplace
Possibly photovoltaic system for geothermal heat pump?

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

As a layperson, I want to light the stove in winter and possibly heat the hot water with it; if the stove is off, then the geothermal heat pump or solar system should take over.
To ensure that the geothermal heat pump does not consume too much electricity, a photovoltaic system should reduce the consumption...

Does this make sense?

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

Solar has no place with heat pumps, despite "heat pump storage". It is never profitable in any case. Water-carrying fireplaces are also pointless, unless it is an old building or the sole heating system. If anything, then photovoltaics and use electricity yourself as best as possible.