If you want really fast charging, you will need to put in 2 types of chargers, Type 2 AC and CHAdeMO standard DC chargers.
Not sure if this setup is allowed for landed housing or not though.
for DC fast charging, you need to use a lot of amps. So it would be better for you to upgrade to 3 phase 100A now. A 100Kw fast charging system will pull almost 50A already.
im not an EV expert but read that DC fast charging will cost more than normal AC charging and also reduce the lifespan of the batteries if done too often