What size electric service do I need?
My advice would be to install the largest service that you can get regardless of how much you plan on using in the short term. 200amps is pretty typical for a lot of residential areas in North America.  Reasons:


In most residential areas, you pay for what you use, not overall capacity
There might not be capacity on the transformer later when you need it
Replacing the feeder cables can be very expensive
Replacing the meter and panel later is expensive
You won't have to worry about it again


Years ago, a lot of houses only had 60amp service.  Consumption increased for a while especially with the increase in electronics and lighting, but now with LED, it looks like it might be going the other way again.

Also consider what amenities you might add later.  A pool, hot tub and second kitchen can easily put you over capacity if only have a small service.