These lights are part of the general lighting load.
However, I wired a custom home once & the owner told me that everything would be turned on all night for his house warming party. I made sure that there would be no breaker trips.
If you are not bidding against Joe Lowball, include some extra circuits and extra capacity on the service. If you are bidding against Lowball Electric, you'd best stick to a code minimum job if you want to get this work.
Not knowing all the particulars, looks like this house should fit on a 200 amp service.
Few things are harder to put up with than the annoyance of a good example.