Seems OK to me. My 4 bedroom house from 2012, was wired with just 4 x 20 amp breakers, running (not all at the same time), 4 x ACs, 2 x 3kW showers, 3 x fridges, 3 x TVs, 2 x PCs, many LED lights, washing machine, water pump and a few fans. Never had a cut-out ever.