Make sure you keep a hpv-style cycle handy too.
Of course

I'm sure you will.
We only buy/sell mid-drive ebikes, they are generally £1700up, but with bosch/yamaha/shimano the human and electric power is beautifully integrated.
We get wheelmotor ebikes through the workshop every day.
One guy's 1kW motor had torn the tread off a schwalbe marathon plus

Legal limit motors wear parts faster, but shouldn't break them.
The switch ebike kit at least has support and spares. Under 500 atm iirc so if you already have a suitable machine, it's a cheap way in.
You will increase your average speed and mass, so the brakes have to work a lot harder.