just as a tip !!
I started assembling all the bare carcasses about 2 weeks in advance (1-2 per day) and placed them in the basement (protected by that rolling plaster wool you put on the floor when painting).
this way, on the assembly days, I only had to carry the finished carcasses into the kitchen. since they are very light when empty, one person can manage it alone, if necessary with a carrying strap. only the large 200cm high wall cabinets I assembled promptly.
regards robi