Is a 30 kWh battery considered massive? My F-150 lighting has a 143 kWh battery.

Yes 30 kWh battery is considered large. It takes up a full 6 slot 2u rack in my garage and cost around $8k. In the context of OP's goals it's larger than what 99% of people in the world will ever have.

	▲	gpm 3 hours ago \| parent [-]
		Approximately 1% of people in the world currently have an EV with a more than 30 kWh battery... and we're very early in the adoption curve of EVs and other large batteries.