ᐅ Floor Plan Revision: Tips and Experiences for Improvement?

Hello,

we had a local construction company prepare a design for our future building project, which we have already revised several times. We would be very grateful for tips or alternative design ideas for the current plan.
We would like an exposed roof truss and would prefer to do without the otherwise very small attic space.
We accepted the steep driveway in order to achieve a better view.
The terrace at the back is currently only accessible through the garden.

Construction is planned for about 8 months from now for various reasons. Two adults, two children (who will then be 13 and 11 years old).
Slightly sloped plot, 670sqm (7,215 sqft).

Development Plan / Restrictions

No development plan / zoning restrictions

Plot size
670sqm (7,215 sqft)

Slope
Yes, visible in the plan

Floor Area Ratio
2 (The builder said otherwise it would look too bulky and we only want two floors)

Number of parking spaces
We need at least two car spaces
Garage large enough for easy entry and exit. Parking in front of the garage must also be possible.

Roof style
Gable roof, staggered shed roof, flexible at this point, preferably with exposed roof truss because the current attic space is very limited

Architectural style
Modern, with lots of wood

Orientation
South

Maximum height / limits
Unknown to me. Neighbor does not accept any setback easement, so we have added greenery on the east side of the patio towards them.

Owners’ Requirements
Number of occupants
Two adults, 40 years old, two children, 11 and 13 years old

Office: Family use or home office?
Office to be usable as a guest room, no home office needed. Still requires a desk and cabinets
Possibly later on the upper floor as the parents’ bedroom, so one child can use the ground floor granny flat. So two separate living units.

Guest bedrooms per year
Very rare visitors

Open or closed architecture
Open, but with retreat options

Conservative or modern construction style
Modern

Open kitchen with cooking island
Seating for 8
Fireplace yes
Balcony currently planned, slightly overhangs the terrace below

Roof terrace on garage

Garage as a large multi-purpose garage with some storage space

Utility garden for ornamental plants, many shrubs, and a hedge at the front for privacy. We would prefer to avoid a shed.

Additional wishes / special features / daily routine, also reasons why certain things should or shouldn’t be

We want to take advantage of the view since the plot was expensive.
We are not fully satisfied with the current design, as I explained in the post.

Steep driveway, path from garage to kitchen, after the stairs you face a wall upstairs and don’t have a direct view out of the windows, roof terrace is isolated, no quick garden access from the upper floor to the north terrace

House Design
Who created the plan:
Construction company from our area, one architect prepared the plan

What do you particularly like? Why?
Good use of space inside and outdoors for a small plot
Enough garden area remains
Bright rooms, sleeping downstairs, living upstairs, large dining area, fireplace in living area, possible two living units later, half-landing stairs

Price estimate according to architect/planner:
680k including exterior works

Personal price limit for the house including fittings: 700k excluding land
Preferred heating technology: Air heat pump

If you had to give up something, which details or features

We are completely flexible

Why is the design like it is?
Standard design from the planner? No, it was individually planned, but largely without us and with little discussion about details, no advice

Attached are images and the site plan.