NEC Article 220 load-calculation for entire house
The calculated load valve is for new services, for existing services you can measure the load on the service.
Do you want to put in a new service? Did you just win the lottery?
Putting in a new service in many states requires you to update everything to code and in the last 32 years there are a huge number of changes that will be required.  Would I even consider a upgrade from 200 to 225? Not a chance, I would not really think about it until 250, and at 300 sure it makes sense.
I have measured many homes and have never found one at 80% in fact most residential homes even in all electric are 80 amps or less on average.
Now to help you feel better about your home, have you changed from all incandescent lights to CFL or LED? CFL cuts the lighting load in 1/2, while LED gives close to an 85% reduction. Has the furnace been upgraded to a newer heat pump? Have the refrigerator, dishwasher, and oven been updated to energy star devices?
All these upgrades relieve the actual demand and the code panels are looking to change the load calculations for this reason.
What would an electrician do to evaluate the demand?
They would pull the dead face off your main service panel and clip a clamp meter on one leg then the other, then tell you to turn on the oven and heater or air conditioner and all the lights and repeat the test heavily loaded. As I just described it, I would bet that your home probably will not be drawing over 125 amps.
If you want to get really crazy add the washing machine and dryer, and turn the hot water on.  Unless you have an electric on demand water heater, you will probably still be below 180 with just about everything on at the same time.
You can do this same test yourself with a amp clamp meter costing under 100$
If you see an imbalance from 1 leg to the other this may need to be balanced, but don’t balance with crazy loads; balancing should be done with normal loads that you have running.
Just FYI car chargers are calculated at 125%.
The feeder to the house only has to be 83% not 125 because of the diversity of the load, even turning so much equipment on I would be surprised to see 80% and there are additional safety factors built in.
For example a 14AWG wire is limited to 15 amps by Code, but in a equipment panel from memory it is over 75 amps. There is a huge safety factor.