One thing about dolar panels, the technology is improving. My fren ordered a 300w solar panel system during mco time. So couldn't instal. Then 9 months later when installed, the installer said 300 panels dropped price edi cos 350watt panels are out so he got a free upgrade to 350. So u may want to wait tioo u get ur car since ur car sounds like its going to take a lot of kW. Alao always choose micro inverters for best efficiencies