ᐅ Low Ceiling Height; Building Higher Than Approved?

Dear community,

I would like to ask for your advice on how you would proceed in my situation.

Problem:
(1) Building permit / planning permission has been granted, and construction is scheduled to start in mid-September (1.5 stories, gable roof).
(2) During detailed and electrical planning, it became clear that the ceiling height is quite limited (2.43m (8 feet) on the ground floor and upper floor); this is my fault, as we did not really pay attention to ceiling height beforehand.
--> As a result, the sense of space will probably not be very pleasant, and the electrical planning will be quite complex since suspended ceilings are no longer an option.

The following options arise:

(1) Leave everything as it is and at least plan recessed boxes in the ceiling structure on the ground floor (around €1,500 (approx. $1,600) additional cost); use surface-mounted spotlights on the upper floor (bathroom).
- Disadvantage: Low ceiling height + possibly surface-mounted spots
- Disadvantage: Additional costs for the ceiling structure
- Disadvantage: Not very flexible for future changes
- Advantage: No risk regarding the building permit / planning permission

(2) Raise the ground floor by one brick row (12cm (5 inches)) and adjust the joist layer in the attic to gain height there as well; then install suspended ceilings for the electrical installation.
- Disadvantage: Not included in the current building permit / planning permission; however, there are no issues with setback distances or maximum heights according to the local development plan
- Disadvantage: Additional costs due to masonry work and suspending the ceiling (cost estimate pending)
- Advantage: Significantly easier and more flexible electrical installation
- Advantage: Better sense of space (recessed spotlights + approximately 3-4cm (1–1.5 inches) more headroom)

What would you decide?