Arrangement terrace and garage. Narrow plot 13.5m

Hello,
we have a narrow plot 13.5x25m in prospect. A local street (no through traffic) is located in the southeast and serves about 5 houses (= little traffic). The future development on the adjacent southwestern plot is not known.
I would like to make the most of the sun, i.e. large window fronts on the southeast / southwest side. Here are the questions: Would a window front facing the street side be "recommended"? Or is it better to forego the light/heat?
Where would be the best place for the terrace? In front of the house on the southeast side? Between the houses (worst case in a 6m wide "gorge", with 3m then being our part, at a eaves height of 6.5m)?
And where do I also accommodate the garages? Distance between garage and property boundary would be 5m.

I would probably start like this:


Now one could consider whether to place the kitchen rather at the bottom of the plan (blue) and have the living rooms together, or to have a larger cooking/dining area and the living room separated from it - as sketched here.

How many parking spaces are mandatory? Are captured parking spaces recognized as such?